According to Arweave’s website
Arweave core developers have been made aware that at least one mining node inside the Chinese mainland has been seized by the government. Node operators should understand that the Arweave network stores and serves a significant amount of material related to the activities of the Chinese government. The Arweave protocol does not require that any miner to store data that they deem inappropriate.
Hpool is the only Arweave pool according to MPS. So does the Chinese government currently own Hpool’s servers? Are they using them to track down illegal Chinese farmers?