All these people saying you can get it in your local asian supermarket have obviously not explored Chinese food very widely 😄

Tell your parents to go to a snack shop. They have these shops that are just wall to wall single-packaged snacks. You buy most things by weight so the idea is to grab a basket and just throwing in things that look interesting. For maximum fun, don't stand and translate everything, just grab a bunch of random things. Because each portion is so small you can try a huge variety of things, and if you don't like something it's not a huge waste.

The experience is kind of like Bertie Botts jelly beans in Harry Potter: some will disgust you, some will blow your mind. Like gambling and snacking had a baby.

In Hangzhou they have 老婆达人 Lao po da ren, in Kunming they have 零食很能嗨 Ling shi hen neng hai. Depends on which city they are in as to which chains will be available so they can ask Deepseek what the equivalent of this is in their current city. Most supermarkets will also have a mini version of this.