公告：本次学术会议并无委托或授权任何公司、机构或代理为参会者预定房间或签证申请。如您有住宿预定需求，请直接在注册时标注，组委会将根据您的要求为您预定房间，且无需提前收取任何费用。如您收到要求支付会议住宿预定费用的邮件或者电话，请谨慎处理，或先与会议组委会联系确认。
Notice: No company, organization or agency is authorized by the conference to offer hotel reservation or visa application for participants. Please provide the booking information when you register to the conference if you need assist on hotel reservation. Local Organizing Committee of the conference will book the hotel for you without any payment in advance.
Be careful with any phone call or email require your credit card information!
Any question about the conference please contact with us :email: guanjingling@pku.edu.cn /Tel:8610-62759601