Almost a year ago at the 2020 Nanjing Marathon, some Chiense men put up some good times as 4 men broke 2:10. Not anymore. All of them have been DQd. Plus the federation has been fined according to RRW.
RRW wrote:
NANJING, CHN (29-Nov-2020). Nanjing Marathon (Chinese National Marathon Championships). The first four finishers in the men's competition were disqualified for because pacemakers who assisted them were allowed to join the race in the middle of the competition. Pacemakers must start the race from the beginning under World Athletics rules. The following four athletes were disqualified: 1. Peng Jianhua, 18.12.1996, 2:08:50; 2. Yang Shaohui, 9.07.1992, 2:08:56; 3. Duo Bujie, 16.02.1994, 2:09:03; 4. Chen Tianyu, 11.05.1997, 2:09:55. The new Chinese champion is Suolang Cairen who finished fifth in 2:12:13. The Chinese Athletics Association, which organized the race, was fined USD 20,000. /WORLD ATHLETICS/
Here's a story on the race. I haven't found one about the DQ.
http://www.xinhuanet.com/english/2020-11/29/c_139551450.htm