[quote=spdrun]Are there limits on liquids at land points of entry to China? i.e. by train, bus, or car?[/quote]
Yes – on type, but I can’t yet confirm on volume. The ref I placed was kind of ‘generic’ but it did apply to all points of entry. I also gave a ref showing ports of entry including land and air. I didn’t check the shortest distance/time to epicenter though. You could try illicit entry, but China is a ‘check-your-papers’ at checkpoints type of country, making illicit harder.
You had jokingly mentioned North Korea as introducing the virus. I found it would easier because there is a partial trust between China and North Korea.