shuāng guǎn qí xià

ㄕㄨㄤㄍㄨㄢˇ ㄑㄧˊ ㄒㄧㄚˋ

Phr

1to attack one problem from two angles at the same time

2lit. to paint holding two brushes (idiom); fig. to work on two tasks at the same time