The talks were virtual, but the promises were not just hot air at this week’s climate summit organised by US President Joe Biden. Finbarr Bermingham joins Zhou Xin and John Carter from the SCMP Political Economy team to recap the pledges leaders made to reduce greenhouse gas emissions, and what seemed like a measure of cooperation between Washington and China. Also this week: the strange story of censorship involving former Chinese Premier Wen Jiabao’s personal article about his mother, the UK…