One thing worth bearing in mind about the restaurant analogy:
The life cycle of restaurants in China is often very short - they open with investment and fanfare. They’ll have a great chef on board, a new and interesting signature dish, good ingredients, new equipment and high standards. After 6 months, all going well, the investors have made back their money. After 12 months, the profit has been made and the owners might look to sell. After 18 months, the place has beeen sold at an inflated price and the new owners will cut costs and quality to squeeze as much money as possible out of the place for its remaining lifespan.
So, a crowd of people means the place is new and quality is still high. No crowd means it’s either just crap quality, or it’s towards the end of its life cycle and quality has dropped.
Someone else can tenuously try relate that to Chinese investment psychology :)