Source: Vorrez, Reddit
Words from the Photographer: Visited the military museum in Beijing, main building was closed but here are few Tanks and bonus pictures from the outside. Sadly all tanks were covered in dust so pictures arent really the best quality.
Seb: The tanks are dusty because of the intense smog in Beijing, there are over 20 million people living there. Click the pictures in order to see them full-res.
UC-F1 & Flame Tank: