Share this postChinese CharacteristicsNotes from ShanghaiCopy linkFacebookEmailNotesMoreNotes from ShanghaiOf QR health codes and mini-apps. Also an announcement. Lillian LiJul 01, 2022∙ Paid6Share this postChinese CharacteristicsNotes from ShanghaiCopy linkFacebookEmailNotesMoreShareThis post is for paid subscribersAlready a paid subscriber? Sign in