Temporarily stop of the abstract registration system.

Please note that the abstract registration system is stopped in the following two durations:

• 11:00 on October 23rd, 2021 – 19:00 on October 24th, 2021 (The system will be stopped for about 32 hours)
• 12:00 on October 27th, 2021 – 13:00 on October 27th, 2021 (The system will be stopped for about 10 minutes)