Justin Sun's experience in the cryptocurrency industry is rich and full of controversy. Below are the main stages of his career in the cryptocurrency field:

Early Accumulation

At the end of 2013, he joined Ripple Labs, becoming one of the creators and developers of the Ripple protocol, and also the first employee of Ripple Labs in Greater China. In 2014, he returned to China and founded Rainberry, serving as CEO. In the same year, he was appointed as the chief representative of Ripple's Greater China office. In 2015, Rainberry secured Series A financing of tens of millions of dollars.

Founding TRON

In July 2017, he created the blockchain project TRON, aiming to build a global decentralized free content entertainment system. On May 31, 2018, TRON officially launched its mainnet. On July 24, it announced the successful acquisition of BitTorrent. On March 5, 2019, TRON partnered with Tether, and Tether launched a USDT that complies with the TRC-20 technical standard on the TRON blockchain.

Marketing and Controversy

In 2019, he bought a lunch with Warren Buffett for $4.56 million, later canceling and rescheduling it, using this event for intense publicity. On October 10, 2022, he became a member of the Huobi Global Advisory Committee. In 2023, he delivered speeches at multiple conferences, including the Meta Era Summit 2023 and the TOKEN 2049 conference in Singapore, and received titles such as "Entrepreneur of the Year in Cryptocurrency" and "2023 Cryptocurrency Revolutionary." In 2024 - 2025, TRON's backdoor listing through SM Entertainment sparked attention.

Some of Justin Sun's actions have also sparked numerous controversies, including accusations of plagiarism, speculation, market manipulation, and facing investigations from relevant U.S. authorities.