Huobi set a deadline to retire mainland China user accounts

Huobi Global said on September 26, 2021 that it would gradually retire existing accounts belonging to users in mainland China by 24:00 UTC+8 on December 31, 2021. The exchange also said it had stopped registering new mainland China users effective September 24, 2021.

The announcement turned a broad regulatory prohibition into a concrete customer-offboarding timetable at a major trading venue. It mattered because the September 24 policy record specifically reached overseas virtual-currency exchanges serving mainland residents through the internet; Huobi’s response showed that language producing an immediate operational consequence.

From a prohibition to an exit timetable

The regulatory trigger was a notice signed on September 15, 2021 by the People’s Bank of China and nine other authorities and published by the State Administration of Foreign Exchange on September 24, 2021. The notice classified virtual-currency exchange, brokerage, token-financing and derivatives activities as illegal financial activities. It separately said that an overseas virtual-currency exchange providing internet services to residents inside China was also conducting illegal financial activity.

Huobi’s September 26 statement addressed both new and existing customers. New mainland registrations had already ceased on September 24. Existing mainland accounts were to be retired gradually by the end-of-year deadline. The company said it would protect customer assets and communicate detailed arrangements through official announcements and direct messages.

That asset-safety language was a company commitment, not an independently audited guarantee. The September 26 notice did not disclose how many accounts were affected, the value or composition of assets held for those users, a product-by-product closure schedule, or the volume of withdrawals expected. Those omissions limit any attempt to quantify the announcement’s immediate effect.

Why the exchange response mattered

The policy document did more than restate that virtual currencies lacked legal-tender status. Its treatment of online service by overseas exchanges addressed the route through which mainland residents could reach platforms located outside China. Huobi’s timetable therefore represented a shift in market access: a venue with mainland customers was preparing to end those relationships rather than merely blocking additional sign-ups.

For the industry, the development illustrated how jurisdictional rules could affect an exchange even when its trading infrastructure and corporate operations extended beyond the jurisdiction. It also moved compliance from general policy language into account identification, customer communication, product restrictions and eventual closure. The announcement did not establish that every exchange would follow the same schedule or use the same definition of an affected user.

Market interpretation and limits

The defensible event-day conclusion is about access and operational risk, not a single-token price effect. Cryptocurrency markets traded continuously across many venues during September 24–26, 2021, while the Chinese notice, exchange responses and broader risk sentiment overlapped. Without a specified venue-level dataset and an event window capable of separating those factors, this reconstruction does not attribute a bitcoin, ether or Huobi Token move to the September 26 announcement.

The decision could still matter for liquidity distribution and customer flows as accounts were wound down, but that is interpretation rather than a measured September 26 result. No claim is made that mainland users liquidated all holdings, that withdrawals were suspended on September 26, or that the December 31 process had already been completed.

Later context: December 15, 2021

An official Huobi notice dated December 15, 2021 later specified that spot trading for mainland China users had ceased at 03:00 UTC on that date, that renminbi-related transactions would end at 16:00 UTC on December 31, and that withdrawals would remain available for one to two years. Those later details clarify implementation; they were not knowable from the September 26 announcement and do not change its event-day limits.