In the corner, an old nurse in her fifties was giving an injection to a patient with a kerosene lamp. The flickering flames cast her shadow on the tent cloth, distorting it into a huge silhouette.

Xie Yun's gaze passed through the busy crowd and fell on the bed at the far side.

That was the old man who coughed up blood in the refugee camp yesterday, and he was also the first lung disease patient they found. At this moment, the old man was hunched over and coughing, and the enamel cup beside the bed was shaking with half a cup of brown medicine juice, and a few pieces of unfiltered medicine residue were floating on the water.

"Old man." Xie Yun quickly walked to his bed and slowly squatted down.

All kinds of noisy sounds were intertwined in the tent, and the old man seemed not to hear clearly what he was saying.

"Young Marshal..." The old man uttered two words with great effort, followed by another violent cough. His thin chest rose and fell violently, as if the protruding ribs would break in the next second.

Xie Yun leaned close to the old man's ear and whispered, "I think you seem to be in a better condition today."

"Thanks...thanks to the young marshal..." the old man gasped and replied intermittently.

"Uncle, when did you become unwell?" Xie Yun asked softly, looking at the old man intently.

The old man raised his head slightly, looked at the top of the tent with cloudy eyes, tried to recall, and said, "Two days ago."

"How are the other members of your family?" Xie Yun asked casually.

The old man's eyes suddenly became vague, and he hesitated for a moment, then said, "My grandson and I are the only ones who depend on each other at home..." He suddenly grabbed Xie Yunshen's wrist, and his nails scratched a few white marks on the rubber gloves, "My grandson... Xiaodouzi... is only seven years old..."

At this point, the old man seemed to remember something and became emotional: "Those people in white coats... said they were giving us vaccines..." He coughed until his face turned red and veins popped out on his neck, "I got a fever right after I came back... cough cough... there's even a red spot on the back of my hand..."

Xie Yun's eyes suddenly became cold, and Xiao Sheng beside him subconsciously clenched his fists. The two looked at each other and understood each other tacitly. In the files of the child's tracking, there was indeed a witness who mentioned "the volunteer doctor in a white coat".

"Where is Xiaodouzi now?" Xie Yun calmly held the old man's trembling hand.

"Tent No. 3... the one full of children..." The old man struggled to get up, his eyes full of anxiety and worry, "Young Marshal! I heard that his condition is not very good..."

Xie Yun held the old man's shoulder and comforted him softly, "Don't worry, old man. I'll go see Xiao Douzi right away. Just focus on your recovery and don't worry too much."

As soon as Xie Yun stepped out of the tent, two health guards wearing gauze masks immediately came forward.

One person held a spray bottle and sprayed the pungent carbolic acid solution on the bottom of his military boots, while the other person used a cotton cloth soaked in alcohol to carefully wipe the edge of the door curtain that his gloves had touched.

"Young Marshal, please raise your hands." The older guard's voice was muffled by the mask, and his tone was full of respect. He took the spray bottle and carefully sprayed the cuffs of Xie Yun's white coat with disinfectant. The crystal clear water droplets slowly slid down the leather holster and dripped onto the muddy ground, instantly corroding into tiny pieces of foam and making a slight "sizzling" sound.

Xie Yunshen stepped over the safety line drawn with lime and suddenly stopped. The sun shone obliquely on his angular face, and his high brows cast a shadow on his eye sockets. He slowly raised his hand and made a unique military alert gesture.

"Sheng." His voice was very low, but it was sharp and unquestionable. "Take a few people and check on the kid named Xiaodouzi in tent number three immediately."