It is a source of pride for women to be involved with a rich man everywhere in the world, not just China.
Leaving aside whether this guy is a scumbag, yes he is, but why the heck would he agree to go on a sightseeing trip with his other mistresses with the spurned one? If I was a playa and I saw one of my beyatches that I just kicked to the curb in car with 3 other beyatches inviting me to a "sightseeing trip" I wouldn't get in the car.