一级理论和二级理论的区别

When Wang Xiaofei looked at the spiritual grass again, he felt distressed. This spiritual grass had obviously just been dug out, and it was knocked to the ground before he could put it into the jade box. At this time, the spiritual grass was still in a dead state. In the hands of young people, due to lack of timely maintenance, if they want to plant it, the possibility of survival is very small....