 Malnutrition is highly prevalent in peritoneal dialysis PD patients, and protein malnutrition will adversely affect outcomes. The investigators develop a dietary education intervention for PD patients to improve fundamental food knowledge that will increase protein intake to target level of 1.2 gkg of protein intake per day. In additional the dietary intervention will provide information about sodium, phosphorus, calcium intake. To more effectively deliver the intervention, the investigators explored a technology using social media in China called wechat. The purpose of this study is to test whether a dietary intervention can be more effective when delivered using wechat compared to a traditional patient education intervention delivered during routing clinical visits. 