When people get busy, sometimes they neglect many things. Take Bo Yan, for example.
While she was shooting one advertisement after another, Bo Yan hadn't been in touch for several days. Initially, the plan was for her to return after seven days, but now, three more days had passed since the seventh day, and she had brought this up with Director Sun, who naturally agreed to it. After all, production hadn't started, and technically she had no obligation to stay in the Northwest all the time.
But when she reported to Director Sun, she didn't ask about Bo Yan, nor did Bo Yan call her back. However, through Director Sun's words, she could feel that they were also busy with intense preparations over there, seemingly quite arduous.
Xia Siyu knew that Bo Yan's involvement in "Spring Light", apart from playing the male lead, was more importantly about learning how to direct and be behind the camera.