I can read chinese and has connections in JinJiang. Here is what I've found:

The JinJiang competition is real. Jin Xiji is a real person and his project "JinJiang Silicon" did get selected in the second class (I don't know what it means). Source here: http://www.sohu.com/a/192263128_740675 . It is in row number 6.

However, the JinJiang competition is just a competition funded by a local city, and there are many projects get selected. It is not a very big deal.

My opinion: WaltonChain seems overhyped, and there are a lot of shills around. They have some tech, and they have some local business partners (which may or may not be a real deal), and they got some honour in some local competition. But they are really just a local business adventure that tries to attach blockchain to their RFID technology in order to ride the ICO hype, just like most chinese ICOs are. I still don't understand why we need to use blockchain for RFID in the majority of the use cases, but it could just be my own limitation of understanding.