The Kowloon Walled City was a 6-acre enclave in Hong Kong that was accepted by the British authorities during the time of British rule over Hong Kong as being under de jure Chinese sovereignty. One of the most densely populated areas on Earth, it housed 35000 people. It lasted until 1993-94 when it was demolished by the colonial authorities after it was transferred to British sovereignty by agreement with the mainland Chinese government.
It's frequently described as "ungoverned", "anarchic", and so on. My question is this: did the mainland Chinese government (or possibly the government based in Taiwan) operate any kind of administrative structure in the KWC at any time between 1898 and its demolition?
For example, did they play a judicial role, let's say if a resident fell behind in paying their water or electricity bills? Did they maintain any kind of communication links with the mainland that required a presence at both ends and the maintenance of equipment or facilities or roads? Did they have official representation on the ground? Did they run polling stations, a police service, taxation, a postal service, offices that issued documents, even just a room with an official and a telephone in it?