At the 2010 Asian Games in Guangzhou, China on November 17, she was controversially disqualified near the end of the first round when she was leading 9-0 against her Vietnamese opponent Vu Thi Hau. "Unauthorized" electronic sensors were allegedly found in her socks before or during the match.[3] Yang's equipment had passed the pre-match inspection. After the disqualification, Yang protested the judgement in tears and refused to leave the mat. Yang's disqualification drew a furious response from media and fans in Taiwan.[4][5] In December 2010, Yang was banned by the World Taekwondo Federation (WTF) from participating any international Taekwondo competitions for three months, her coach Liu Tsung-ta was suspended for 20 months and the Chinese Taipei Taekwondo Federation was fined $50,000.[6] The Sports Affairs Council of Taiwan filed an appeal with the Court of Arbitration for Sports based in Lausanne.
Taiwanese extreme anti-Korean movement
After Yang's ruling, some Taiwanese people even started a boycott of Korean products because they think South Korea controlled all the major positions in the world taekwondo body that oversees the sport. Some Taiwanese even carried out extreme anti-Korean movements such as burning the South Korean flags and throwing eggs at a Korean school in Taipei. In response, the Ministry of Foreign Affairs of South Korea said, "The disqualification of Yang Shu-chun at the Games is regrettable, but there is a need to pay attention to the burning of South Korean flags and boycotting of products that are spreading across the island."[7]