I think certain people may be working overtime at the moment. I have been looking at a no threat UK forum today and it is super slow.

Where have your classifications come from? I cannot find anything on the net.

You can start street performing without any amplification. That way you can experience what it will be like, without laying out more money first, and you won't need a van or car for moving gear. While you are doing this you can see, and hear, what other street performers are using.
There are many street performers on Haigeng Daba every evening and it has become part of 'the scene' there. It is away from traffic/traffic noise and although many of the street performers use amps, they are not needed.
If you don't know Haigeng Daba, it is a promenade next to the lake, that is about 2 km long. People go there in the evenings to walk and relax. To find it, follow Hongta Xi Lu westward until you hit the lake. Or take Dianchi Lu south until and then turn west on Yinghai Lu and go to the end. There are several buses to Haigeng Daba from town.

There is a difference between asking price, and actual getting price.

There are many properties for sale where people are asking a price that will get the seller the return that they think they are entitled to. If they cannot get that price they usually do not sell, but they will not lower the asking price. In other words, they will only sell for a profit that meets their expectation, otherwise they will just hang on to the property. It is possible that the apartment you looked at 4 years ago is still for sale.
I know people with 30 properties that they will just not sell, because they cannot get the asking price. There are also companies that have property on their books, that is overvalued. These are just two of the causes of anomalies in the property market.

I am not sure, but I think market statistics could be based on asking price, and not on actual selling prices. This also affects sellers expectations of what they will get. An estate agent told us we could sell a property for between 1million and 1.2 million, we actually sold it for less than 700k.

The actual turnover of second hand property is possibly a low percentage of the actual number of properties on the market.
Even putting this aside. With a rental mutliplier of 800X, property is not a good investment.

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