This is because Lv Zhong discovered that the little one's bronchitis was actually caused by bacterial or viral infections. And the Pathogenic Worm is exactly the nemesis of these bacteria and viruses.
When these three dozen Pathogenic Worms entered the child's windpipe from his mouth, under Lv Zhong's command, they started to devour these bacteria and viruses rapidly.
...
Under the lead of Zheng Tianle and his daughter Zheng Qiuli, Lv Zhong carried the small child into an office. This is where Zheng Qiuli's day-to-day office is.
Setting the little one down on the sofa, Lv Zhong glanced at Zheng Qiuli and said, "Sister Qiuli, go turn on the air conditioning and set the temperature to the highest. I will administer needles to Little Weiwei shortly. If the air conditioning isn't turned on, Little Weiwei might catch a cold…"
