my attempt

China argued heatedly again with the Vatican against its critism on one conference held this month by a Chatholic Church recognized by the Chinese government, saying the critism was "unwise" and "unfounded".

Facing the Vatican's critism on one conference held this month by a Chatholic Church recognized by the Chinese government, China argued heatedly again (saying) that the critism (from Vantican) was both "unwise" and "unfounded".

 

另外可以考虑用同位语，倒装等技巧，久而不写，不熟练Le.