On 5th week of 6th unit from 9/27 to 9/30, Alvin organized meetings, meanwhile Zarina, Derek and Annabelle joined as presenters. Lesson 17 had been taught by Zarina on 9/27, Lesson 18 had been taught by Derek on 9/28, Lesson 19 had been taught by Annabelle on 9/30.
Reported by Alvin Zhou
