Does your son speak Chinese? Did I write all the Chinese young men and women are promiscuous? Your son only spent one year in China, dude. Which means it's well-neigh impossible for him to know what's going on in China without talking to the Chinese from all walks of life.
China has lots of websites that feature dirty stuff, say, porn video clips produced by both Japanese and Chinese people. On the face of it, it's verboten in China; however, scads of Chinese men have found a way to get around such restrictions. They upload prurient video clips featuring their sexual encounters with young Chinese girls to the internet.
Tik Tok's Chinese edition, Douyin or 抖音 in Chinese, also has nasty video clips featuring young teens, in spite of its censorship. In one video clip, a petite Chinese girl hitches up her skirt to expose her underwear deliberately, and says "you are a bad uncle". In another video clip, a Chinese teen , who's also clad in a mini-skirt, dances around with her skirt billowed out like a small parasol. In other words, such Chinese girls just do this in a bid to attract eyeballs or even to make fast bucks in this clickbait-driven world.
To make matters worse, some Chinese kids and teens have become flinty-hearted sorts. In one video clip, a Chinese girl wearing a blue coat is seen taking two little Chinese girls to the top of a building and ask them to stand to the edge of the building. In the meantime, she grabs the railing tightly as the two little girls play around the edge. Luckily, a man spots them and hectors the two little girls to stay away from the edge of the building. Finding that he is filming them with his phone, the blue-coated girl glowers at him and then lunges at him, trying to snatch his phone away from him.
This video clip can be found on Chinese websites, You could ask your son to check it out.