The following sessions are of interest to me (subject to time constraints). The time is Taiwan time which is UTC+8. I make this list so I don't have to re-check the schedule now and then.

July 28 (Sat)
17:00 - 17:50 Panel Discussion: Story of Debian contributors around the world

July 29 (Sun)
14:30 - 15:15 Civilization runs on Debian
16:00 - 16:50 Debian Science BoF
17:00 - 17:20 Debian Desktop, for the elderly

July 31 (Tue)
13:30 - 14:15 Debian on Mobile Devices
16:00 - 16:45 Status of Japanese (and CJK) typesetting with TeX in Debian
17:00 - 17:45 Rethinking font packages—from the document level down

August 2 (Thu)
13:30 - 14:15 That's a free software issue!
14:30 - 15:15 Electronics BOF
17:00 - 17:45 Reproducible Buster and beyond

August 3 (Fri)
10:00 - 10:20 Pocket Debian, in my high school
11:00 - 11:50 My crush on GNU Guix
13:30 - 14:15 Multiple people
14:30 - 15:15 The Free Software Foundation, Debian, and the free software movement
16:00 - 16:50 Are any big brothers watching you, and if yes, what can they tell about Debian?
17:00 - 17:50 Flying Rockets with Debian!

August 4 (Sat)
13:30 - 13:50 How Debian helped translating thousands of articles in Wikipedia!

August 5 (Sun)
14:30 - 15:15 Hacking with x86 Windows Tablet and mobile devices on Debian