The men usually stayed in Building 4 when they had nothing to do, partly because it was quiet to chat, and partly because it was close to the restaurants, which was convenient.

Qi Si put Xiao Zhengxin on the sofa and didn't dare to smoke. Smoking in front of a child would get him scolded. Qin Xiaoyu couldn't catch him, and Zhou Xing's mother would also interfere. He got up and went to the kitchen to find something to chew on.

He brought back a plate of fried peanuts, and as soon as he entered the door, he noticed that his cousin's eyes were off. The person who was just concentrating on drawing blueprints was now staring blankly.

Qi Sishun looked at him and saw that Xiao Zhengxin had slid off the sofa at some point and took a few steps while holding onto the sofa.

Qi Si was so startled he almost dropped the plate in his hand. He always held the child in his arms; could it be that the child could walk now?

Xiao Zhengxin turned around and saw his father. He grinned and actually wobbled over.

"Oh dear, my son can walk!" Qi Si squatted down, threw the plate on the ground, knelt down, opened his arms, and knelt to meet Xiao Zhengxin.

Little Zhengxin was just learning to walk and was unsteady on her feet, so she fell right into his arms. Thinking he was teasing her, she giggled.

"Fourth brother, you're doing great! Your son is almost old enough to run errands!" My cousin was so moved by what he just saw that his eyes welled up with tears.

"You're even more amazing, you're almost a grandparent by now."

"Good, all good!" The cousin got up and patted Xiao Zhengxin's face. This kid really has grown up to be adorable, with a chubby face. Thinking back to when Tang Long was held in his arms like this, now he's all grown up, and he's gotten old too.

When Xiao Si's wife heard that Xiao Zhengxin could walk, she was so happy that she couldn't sit still. She put down her cards and called Shanghai, insisting on asking if Xiao Zichen was walking yet.

Once the child can walk, there are many more troubles; it seems too tiring. Qi Si is overly cautious with Xiao Zhengxin, and the nanny can only follow behind him, bending over, for fear that he might bump into something.

But just two days later, something happened.

Because building materials were still very primitive at that time, there were no PVC windows; everything was made of wood. The temperature difference in Northeast China is large, and wood is prone to warping, so gaps would appear in doors and windows after a period of use.

The children were running in and out, and the doors never closed properly. So Grandpa Hanhan simply installed door springs on every door. It's basically a spring in the middle, with one end hanging on the door frame and the other on the door. When someone goes in or out, the spring's force automatically closes the door.

In Northeast China, the swear word is "Your brain has been slapped out of your head," which is how this saying originated. Just thinking about it gives me a headache.

Of all things, the blow landed squarely on Xiao Zhengxin's head. The nanny poured him some water, and in the blink of an eye, she ran to the door.

Xiao Jin was running out, not seeing him following behind. The door closed automatically, slamming right onto his forehead, turning it red instantly. He plopped down on the ground and burst into tears.

Sister-in-law Xiao Si was playing cards when she heard something was wrong, so she ran towards Building No. 4.

In the past, Qi Si would have kicked Xiao Si's wife away. But things are different now; no matter how much he feels sorry for her, he has to hold his tongue.

The whole family was very careful, genuinely worried about the child. The fourth sister-in-law felt both ashamed and guilty, and gritted her teeth, determined to give up mahjong.

The two returned to their room earlier than usual. Qi Si held his son, looking sullen. Xiao Si's wife took Xiao Zhengxin from her and examined him closely by the light. His skin was red, but it didn't seem to be a serious problem.

Deng Jianyan examined me and said I was fine; his medical skills are trustworthy.

Xiao Zhengxin was tired from playing all day, so he fell asleep as soon as he was put on the bed.

"Fourth Brother, I was wrong. I'll never play mahjong again." Fourth Sister-in-law leaned close to Qi Si and coaxed him.

"Go to sleep." Qi Si was still angry, so he lay down on the bed and gave her a big back hug.

"Fourth Brother, Fourth Brother..." Fourth Sister-in-law clung to him, rubbing his broad back, and Qi Si couldn't stay still.

"Go to sleep!" Qi Si whispered sternly.

"If Fourth Brother ignores me, I won't sleep." When Fourth Sister-in-law heard that his tone had softened, she quickly rolled over from behind. Qi Si was afraid she would fall, so he reached out and caught her, pulling her into his arms.

Sister-in-law Xiao Si chuckled and shrank into his blanket. Qi Si's face couldn't stay straight anymore, and he sighed.

"Fourth Brother, if I were to give birth to your daughter, and even a minor scratch were to happen, you'd eat me alive!" Fourth Sister-in-law teased him with a grin.

"Then give it a try!" Qi Si rolled over and pinned her down.

"Fourth Brother, I know I can't compare to Xiaoyu in any way, but I'm trying my best to learn," Fourth Sister-in-law said, her eyes narrowed and her voice filled with resentment.

"She is her, and you are you. What are you learning?" Qi Si's tone was still heavy, but he sighed for some reason.

"Fourth Brother, I'll do whatever you say. Let's live a good life together, and I'll give you a bunch of kids." Fourth Sister-in-law's eyes sparkled as she pouted and kissed him.

Qi Si hugged her tightly. Having such a wife in this life was enough.

The next day, a large bruise appeared on Xiao Zhengxin's forehead. His family felt sorry for him, and even Commander Zhou couldn't sit still and got up to check on him several times.

"It's alright, boys all grow up without bumps and bruises. When I was little..." Qi Si finally cheered up.

"Don't bring up your childhood. If you were here with me when you were little, I would have straightened you out long ago." Commander Zhou stopped him from continuing. "The child is growing up and can understand what I'm saying. Be careful what you say in front of Xiaozheng."

"Hey! You're right, I'll just listen to you." Qi Si understood that Commander Zhou didn't want Xiao Zhengxin to know about his past, it was for his own good.

“He needs to be kept in check,” Sister-in-law Si joked.

"Can't you also control me?" Qi Si's words left everyone speechless. Where did this sun rise from?

Then look at Xiao Si's wife, her face flushed with shyness; this couple is truly in perfect harmony.

Qin Xiaoyu most wanted Qi Si and Xiao Si's wife to live a good life together; seeing them so affectionate made her feel comfortable.

A Lei wasn't stupid either, and he would casually say something to her: "Don't assume that everyone is as sincere to you as Fourth Brother. You have to be wary of some people."

"You mean Lu Di? You're being jealous again, even for no reason." Qin Xiaoyu knew he was still unhappy.

"Why would I be jealous? I just said it offhand." A Lei hesitated, as if he had something else to say but swallowed it back.

"If you have something to say, just say it. Why are you acting like this?" Qin Xiaoyu glared at him.

“Okay, I’m not comfortable keeping this to myself.” A Lei pulled her aside, took out his wallet and showed it to her, “I lost some money.”

"How much?" Qin Xiaoyu looked at the thick wad of cash in her wallet, which didn't seem like a small amount.

"It's strange, a few days ago I felt like I had lost some money, but I had no proof, and I didn't know how much I had spent. Later I paid attention and found out that I had lost it again yesterday, one RMB and seven foreign exchange certificates."

"So many?" Qin Xiaoyu was a little anxious when she heard that foreign exchange certificates had been lost.

There wasn't much RMB, just ten yuan a note, but the foreign exchange certificates here were all one hundred yuan each, seven of them totaled seven hundred yuan.