week 7: http://www.mediafactory.org.au/shijie-luo/2020/04/22/week-7/
week 8: http://www.mediafactory.org.au/shijie-luo/2020/05/01/week-8/
week 9: http://www.mediafactory.org.au/shijie-luo/2020/05/05/week-9/
week 10: http://www.mediafactory.org.au/shijie-luo/2020/05/13/week-10/
week 11: http://www.mediafactory.org.au/shijie-luo/2020/05/20/week-11/
week 12: http://www.mediafactory.org.au/shijie-luo/2020/05/25/week-12/