Online group: all players except mainland China.
Group A: born before December 31, 2007
Group B: born from January 1, 2008 to December 31, 2011
Group C: born from January 1, 2012 to December 31, 2015
（1） Online competition: vint.ee On the network platform, the competition rules are Taraguchi-10 rules, and the competition time is December 4-6
（2） Offline competition:
Due to the epidemic situation, the offline competition time of each group was compressed from four days to two and a half days, all of which were arranged by seven rounds of points. The registration time was from December 10, 2020 to December 11-13, three rounds a day, and the award ceremony was held at noon on December 13.
(1) Group A adopts the Soosorv-8 rule, The Yamaguchi rule was used in group B and group C, and set the number of points N = 2.
(2) Competition time limit: Group A each side time limit is 90 minutes + 30 seconds / hand (Fischer), group B and group C was 60 minutes per side.
（1） The top 3 winners in each group will be awarded the certificate and trophy; the 4-8 winners will be awarded the certificate.
（2） Bonus (RMB after tax)
Online group: Champion 3000 yuan, runner up 2000 yuan, second runner up 1000 yuan
The champion of group A is 10000 yuan, the second runner up is 5000 yuan, the second runner up is 3000 yuan, and 1000 yuan is 4-8 places;
Group B champion 5000 yuan, runner up 3000 yuan, second runner up 1000 yuan, 4-8 600 yuan;
Group C champion 3000 yuan, runner up 2000 yuan, second runner up 1000 yuan, 4-8 600 yuan;
4.Registration and registration
（1） All participants will sign up by e-mail. The E-registration form, photo of personal ID card, anti epidemic commitment letter and health code of Anji District in Zhejiang Province will be sent to email address before November 15, 2020 firstname.lastname@example.org 。 Please indicate the number of participants in the application form and reserve the number of rooms according to the registration form and all fees. Otherwise, no arrangement will be made.
（2）Overseas players can only participate in online group without any fees，Registration must be completed by November 15 on vint.ee;
（3）Players from regions with zero epidemic record in China can participate in offline competitions of group A, group B and group C