C327 Explanation
That night Yuen Chuan did not disturb the others, so the next morning, when Yuen Chuan woke up, she saw Molan's puzzled expression.
Yuen Chuan did not wish for Molan to worry and only told her that Zhong Ling was a friend's younger sister. Because her friend went overseas for work for a period of time and Ling happened to be sick, she entrusted it to her