Zuó tiān xià yǔ ，yùn dòng huì què zhào cháng jǔ háng 。
It rained yesterday but the sports meeting went ahead as planned.
(却 què ‘on the other hand’ is a conjunctive.)
Quite often a conjunction (in the first clause) and a conjunctive (in the second clause) work together for the linkage:
Yǔ suī rán hěn dà ，tā què lái le 。
He came in spite of the heavy rain./Although the rain was heavy, he did (however) come.
(虽然 suī rán ‘(al)though’ is a conjunction and 却 què ‘on the contrary’ is a conjunctive.)
 Yip, P. C., Rimmington, D., Xiaoming, Z., & Henson, R. (2009). Basic Chinese: a grammar and workbook. Taylor & Francis.