1. Registration fee will be 360 USD and 270 USD for on-site official participants and students, respectively. The registration fee covers admission to all technical sessions; two refreshment breaks each day of the conference, lunches, dinners, conference banquet, and a copy of the conference proceedings, but not accommodation. Accommodation at the conference venue needs to be pre-booked. The online participants will be free of registration fee. 

2. We accept on-site and online payments for the registration. On-site participants need to return the pre-registration form before September 24, 2021. The guide to payments and pre-registration can be found in ISSI2021 third announcement in Chinese.