In fact, it is no wonder that Liu Tan was surprised. When he was designing the water button, in order to make it last longer, he conducted many experiments and modified the details bit by bit. Finally, he made sure that it could withstand long-term use before he produced the finished product.

Long-term use means that even if you use it twenty times a day, it can be guaranteed to last for at least three years.

He had no way of guaranteeing more because the experiment time was too short. There were no machine experiments in those days, so he had to rely on manual labor to conduct experiments. If he wanted to test for a longer time, it would also take longer experiments.

But this is enough, right? After all, a royal toilet is definitely used by one person only. For example, the one given to Liu Ju was definitely used by him alone. So, unless there are any major accidents, it can be used for several years without any problems.

Even if he once said that he might make money by selling accessories, it was just self-mockery. Besides, would he dare to give Liu Che and Liu Ju bad things?

How could it break down in just these few days?

Liu Tan was worried about his father's health and began to wonder if something was wrong.

He thought about it carefully and decided to take people to get the accessories that might be used. The water inlet and outlet in the water tank and other places can be replaced. Liu Tan now suspects that those people did not understand and misjudged the broken parts.

After Liu Tan entered the palace, he did not meet Liu Che immediately. At that time, Liu Che was still discussing politics and had not even seen Liu Ju.

Fortunately, he didn't need to wait, and a eunuch took him to a side hall.

Liu Tan had no problem seeing the toilet placed in a side hall. After all, the toilet was broken, so why would the emperor have to use a broken toilet? Of course, it had to be moved to a side hall first to wait for repairs, and then moved back.

But when he got there, he saw a brand new toilet placed on a clamp in the middle of the side hall.

When Liu Tan saw the toilet for the first time, he thought it had never been used. After all, it looked so new.

Just think about it, the things used by the emperor were of course cleaned every day to ensure that they were always as bright as new.

He first asked someone to check where the water tank was broken and how it broke.

After all, even if he was the founder of the toilet, there was no reason for the King of the North to repair the toilet himself, even if it was the emperor's toilet.

Liu Tan stood aside and asked subtly, "Has this toilet been used a lot recently?"

He actually wanted to ask if his father was in poor health.

However, if this question were asked in an ordinary family, it would just be a son's concern for his father, but in their family, it would easily lead to misunderstanding - what are you trying to do by asking about the emperor's health condition?

Liu Tan didn't dare to ask directly, so he could only do it in a roundabout way. His roundabout way was not to prevent Liu Che from noticing, but to tell Liu Che that he had no other intentions.

The eunuch nodded and said, "It has indeed been used many times, but Your Majesty believes that it was caused by the excessive pressure of the Imperial Servant Shangguan."

Liu Tan felt something was wrong. "Shangguan Taifu? What...what does this have to do with Shangguan Taifu? This toilet...has Shangguan Taifu used it too?"

The Shangguan Taifu should be referring to Shangguan Jie, who should be one of the most trusted ministers by Emperor Wu of Han. However, no matter how much he is trusted by Emperor Wu of Han, he would not share a toilet with others!

The eunuch said, "Yes."

Liu Tan couldn't help but gasp: "No, tell me in detail. If His Majesty asks, just say that the toilet is ingeniously constructed and I need to know more before I can fix it."

This was really subversive. He knew that the emperors of the Tang Dynasty liked to have sex in the bathhouse, but that was when the emperor was taking a bath while other people watched and chatted with him.

Liu Che shared a toilet with someone? Was he still half asleep?

The eunuch was frank and straightforward, saying, "A few days ago, the Imperial Household Officer Shangguan and the Minister of Agriculture came to visit. His Majesty first showed us the machine, and then the Imperial Household Officer and the Minister of Agriculture were curious, so they tried it themselves, and ended up breaking it."

Liu Tan's expression was dull. "Shangguan Taifu and Da Si Nong...are here together to visit...the toilet?"

What kind of hobby is this? The current Minister of Agriculture is Sang Hongyang. These two people would not flatter Liu Che's horses to such an extent, right?

No, to flatter someone really doesn’t mean using Liu Che’s toilet.

Liu Tan felt that he must have misunderstood something, so he asked again, "Besides Shangguan Taifu and the Grand Minister of Agriculture, who else has ever visited this toilet?"

The eunuch called out a series of names. Wow, he even heard the names of Princess Yangxin and Princess Dangli!

Liu Tan just felt dizzy. At this time, no matter how stupid he was, he knew that Liu Che must have never used it before, but just shared it with everyone as a novelty!

So what?

Liu Tan didn't understand. He offered so many things, and Liu Che had never done this before. What was so special about the toilet?

He felt that he needed to communicate with his father that this toilet was not for viewing!

Not long after, the craftsman Liu Tan brought came down and said, "Your Highness, it has been changed."

Liu Tan asked, "Can you tell how bad it is?"

The craftsman hesitated for a moment, but Liu Tan waved his hand and said, "Just say what I tell you to say, and then go back."

The craftsman heaved a sigh of relief and said, "It was damaged by frequent pressing."

Liu Tanxin said that Liu Che had invited so many people to visit, and each of them pressed it several times, so wouldn’t it be easy to damage it?

After the craftsman finished speaking, Liu Tan really asked him to go back first, then turned around and ran to wait for Liu Che to finish his meeting.

After finishing the meeting, Liu Che heard that Liu Tan had entered the palace and immediately summoned him.

When he saw Liu Tan, Liu Che was very surprised because he rarely saw such a serious expression on his son's face.

Liu Che watched him sit down in a serious manner and couldn't help laughing. "What happened today? Who made our King of the Northern Territory angry?"

Liu Tan looked at him seriously and said, "Father, the things I gave you were meant for your use. Why are you using them for exhibition?"

Hmm? Exhibition?

Liu Che soon understood something and said with a smile, "It's just that everyone is a little curious."

Liu Tan's eyes widened. "If they're curious, just let them go find me. How could they possibly destroy your things?"

Liu Che was not so stingy. Of course, this was probably because he was sure that even if it was broken, Liu Tan could fix it.

Seeing Liu Tan say this, he stamped his seal on a document and said, "How can they ask about immortal arts casually? Just show it to them, and don't let them bother you."

"Huh?" Liu Tan looked bewildered. "Where did this magic come from?"

This time, before Liu Che could say anything, Liu Tan asked in shock, "You...you're not talking about the flushing process of the toilet, are you?"

Liu Tan knew that Liu Che had guessed right without him saying anything. For a moment, Liu Tan felt very desperate. If you don't understand, just tell me. How can you get better by pointing to science and talking about theology?