Only with the consent of the other party can I give you the contact information, otherwise there is no other way to get the contact information.

If you are a boy, there are actually many ways to get in touch, but it mainly depends on the relationship between the other person and yourself. If you just met, if the terms are not very favorable, then don't worry too much. Establish two or three meetings and exchanges first, and then find a suitable topic and say that you can add a WeChat. If you need to communicate in the future, or find her professional topic, or find your professional topic, just add a WeChat saying, if you want to know anything in the future, please ask for leave. If you don't know that the other person has a good impression on you, don't show too obvious purpose, such as inviting you to dinner after the price WeChat or going out to play or watch movies when you are free. It is not good and will probably be rejected.