Out of town

I will be out of all communication until sunday.

I would like to make a shout out to Tom Angus, or anyone else that would know.
My question to you is if you know anything about the Japanese occupation of Inner Mongolia? There is a tunnel system (the Japanese made during their occupation)/bunker we are going to visit, but it will be self guided. If you or anyone knows about the Japanese occupation of Inner Mongolia particularly Heishantou/ Hailar, it would be a huge blessing!

Thanks!