This place seems to be an unknown to Western tourists. We were the only Westerners there. It is amazing. The kids absolutely loved it and we had to drag them away from every display. EVERYTHING is interactive. The facilities are spotless and air conditioned. We were blown away by the museum. It is near the Olympic Stadium, the old one closed down so make sure you get the right one. It is a nice break from walking around outside in the heat. They have a Children's Paradise area for pre-schoolers which we didn't visit as our kids are 5, 9 and 10.
If you are short on time, go to level 3 first which has the 4 exhibition halls. Good luck with dragging the kids away from the cars, balls and ships and robots! Well worth the visit.
There is food and drinks on all levels and really clean toilets.
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