1. Academic exchange: School of Geological Engineering and Surveying and Mapping of Chang 'an University cooperates or exchanges with most universities in some professional fields. Peng Jianbing, as a professor at the School of Geological Engineering and Surveying and Mapping of Chang 'an University, went to most universities for further study or academic exchange.

2. Visiting old friends: Peng Jianbing studied in Wuhan Institute of Geology, and later came to Dida to reminisce about his youth or visit old friends.