The official diagnosis has done little to ease anxieties in Jilin, an industrial city in northeast China where verdant low-rise mountains form a backdrop to a skein of smokestacks.

• 官方诊断并未使吉林的紧张情绪有所缓解，这座中国东北的工业城市，翠绿的丘陵周遭烟囱林立。