Colin Huang 

Colin Huang, Chair and CEO of online discounter platform Pinduoduo, is China's second richest man, according to the Forbes Real-Time Billionaire Index on June 21.

Huang, with a net worth of $45.4 billion, has surpassed Alibaba founder Jack Ma, and follows another Internet heavyweight, Tencent's CEO Pony Ma, who is worth an estimated $51.5 billion.

Huang, a computer science major, started his career at Google in the U.S. in 2004. Returning to China, as a serial entrepreneur he founded an online games company and an e-commerce platform for consumer electronics and home appliances before setting up Pinduoduo.

Established in 2015, Pinduoduo is one of China's largest online retail businesses. In 2018, it raised $1.6 billion in a U.S. initial public offering.