China won four gold medals on Sunday afternoon at the 69th edition of Strandja, the oldest international boxing tournament in Europe.
Zhang Rong won the women's 64kg class without a bout, as the other finalist, Rebecca Nicoli of Italy, did not compete because of medical reasons.
China's second gold medal went to Asian Champion Gu Hong, who defeated Iaroslava Iakushina of Russia 3-2 in women's 69kg category.
Immediately after her, the Rio 2016 bronze medalist Li Qian beat Natasha Gale of England 3-2 in women's 75kg.
In the fourth final with China's participation, Wang Lina won 4-1 against Mariia Urakova of Russia in women's 81kg.
Four other Chinese boxers took bronze medals, including Ye Jiali in women's 48kg, and
Wang Gang, Tanglatiha Tuohetaerbieke and Maimaiti Aihemaiti in men's 64kg, 75kg and +91kg categories respectively.
The seven-day competition brought together nearly 250 male and female boxers from 30 countries and regions.
