To ask someone to add you on WeChat, you can say:

"Can you add me on WeChat?"

"Would you mind adding me on WeChat?"

"I would appreciate it if you could add me on WeChat."

"Could you send me your WeChat so we can stay in touch?"

"I'd pke to connect with you on WeChat. Can you add me?"

These are all popte ways to ask someone to add you on WeChat. It's important to be respectful and considerate when making requests pke this.