China does not have many public IPs (v4) in the first place, so I doubt it is in any way deliberate. See https://en.wikipedia.org/wiki/List_of_countries_by_IPv4_addr...:
Country | Number of IPv4 addresses Per Person
US | 4.91196
China | 0.24591
Country | Number of IPv4 addresses Per Person
US | 4.91196
China | 0.24591