Good products are inseparable from faithful service. The existence of industrial design is not only in the service product itself and the development of business, but also in the service users. Since it is a service, it is inevitable to listen to the real voice of users modestly and openly.

This product has gone through three rounds of evaluation, with 5-10 people in each round. It really understands the real feedback of users' behavior performance, psychological reaction and so on in the form of voice and video 1-to -1 interviews...(PS: Many people have been curious about the interview situation, which is actually very rational and objective communication, but different products will conduct in-depth communication and analysis according to different behavior slices, just like the logic of evaluation of mobile phones, games, etc., the content and standards are different. finally, don't ask me what the content and standards are. this is a trade secret# doge)