變更

* [https://www.youtube.com/watch?v=TvNBXbla_10 TEDx Talk: Feeding the food movement]

*[https://www.voacantonese.com/a/tiananmen-student-protestors-statement-on-30th-anniversary-20190604/4946458.html  美國之音 :天安門民運參與者發表“紀念六四宣言”]