Yiri is a web based solution that enables all publics exchange their skills through online or offline method for free. We provide a platform for skill exchange suppliers and seekers. We also provide a platform for people organizing or anticipating in activities. People may meet up or communicate online in a group to make friends, learn skills and have fun together. Our mission is to allows anyone to learn skills, offer skills and expand their network efficiently. Our business philosophy is: by consistently providing a reliable, affordable and friendly service for anyone with skill to exchange, we hope our customers can always get what they want through our website service.