The decision to greenlight digital asset trading for retail investors in Hong Kong beginning tomorrow is "a very big step for crypto in China," a country known for its unfriendliness to the sector, Justin Sun said. 

In an interview with Decrypt on Wednesday, the crypto mogul said that crypto exchange Huobi, which he advises, will begin onboarding Hong Kong residents on Thursday. The Hong Kong Monetary Advisory has said crypto firms can onboard customers during an 18-month grace period during which they will be expected to secure proper licenses.