sir82 : As far as I know, the WTS owns no real estate in China.
That's probably true. In Chinese cities, rights to land use are usually held on leasehold (except in villages, where land is owned by the village). In cities, a corporation would have to have a legal existence to lease land or even lease an existing building, and I doubt very much that the witnesses have a registered entity.
It's different in Hongkong as the legal forms existing at the time that sovereignty of HK was returned to China, were to continue for another 50 years.
JW.org gives the branch address as:
Watch Tower Bible and Tract Society
22/F, 1 Hung To Road,
Kwun Tong,
KOWLOON, HONG KONG
Its in quite a substantial building, but if 22/F signifies a floor, it would appear that they are leasing the space, although it could be owned on some sort of strata title. I suspect that they do not look after their activities in China from that office. In fact may only look after HK activity*. I imagine that it would be relatively easy for the Chinese authorities to monitor the space.
Probably, the work in China is supervised from NY, all of the nearby branches (Taiwan, Japan, S.Korea) have all sorts of political/patriotic complexities.
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an interesting note about the activity in HK, from what seems to be a page from JW-org.
"My congregation is fairly typical of the situation here in Hong Kong. We have 230 publishers, 220 of whom are SISTERS! Out of the 9 brothers in the congregation we have 2 elders and 1 ministerial servant: myself."
link: http://www.needgreaters.com/HongKong.htm
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My gay xjw friend here in Sydney knows an interesting story about Cambodia, when it was under the care of the HK branch.
Two Gilead graduates (male) were sent to Cambodia, the WTS rented a small apartment for them, paid for apparently through the HK office. Some time later, one of them became ill and died. In Cambodia (a hot country) bodies must be disposed of quickly and are cremated. The surviving brother (an Australian btw, from Adelaide) did not have enough money to pay someone, and not enough money to buy the full amount of firewood needed to do it himself (i.e.to fully burn the body). So he carted the body of his partner and the firewood to the cremation site and someone showed him how to stack the wood and put the body on top. But as told, once alight the body kept falling out of the fire because of not enough wood, and the survivor had to keep pushing it back into the coals.
Bad enough, you think? The surviving missionary had a breakdown and returned to Australia. The HK branch sent someone out to terminate the lease etc. and this guy found evidence that these two missionaries had become lovers, and that the emotional impact of the incident was not just from having to cremate a body, but the much deeper emotions coming from the body being someone you loved deeply.