Yang under the encouragement of his grandfather would move to the Philippines around 1998 or 1999 to start his business venture in the country. Yang would establish prominent business ties in the city of
Cagayan de Oro in
Mindanao where he often referred to by the Antonio Lim name in the local industry. He founded Yangtze Trade Company Inc. in 2000 which would branch out to various companies namely; Yangtze River Economy United Development, Yangtze Pharmaceutical Group, Yangtze River International Group, HK Yangtze Group International Yangtze River Pharmaceutical Group, and Yangtze Rice Mill. He was the president of the Philippine Sanjia Steel Corporation. His company operates Philippine Veterans Investment Development Corporation's (Phividec) steel mill in
Tagoloan, Misamis Oriental. Yang was also linked to a former
Philippine Offshore Gaming Operator (POGO) hub at the Alwana Business Park as the alleged owner of Oroone Inc. a registered service provider for POGOs. Yang said he is a mere "
dummy" for another person. The city council released a resolution in 2017 permitting the operation of the Oroone hub. Operations of that POGO hub ended in July 2023. ==Arrest==