Tā zài huìyì shàng duì lǐngdǎo kāipào, pīpíng le hěnduō wèntí.
He opened fire on the leadership at the meeting, criticizing many issues.
Tips
usage
Literally means to fire artillery. Figuratively very common: to launch a harsh verbal attack or public criticism, especially against authority figures or institutions. 向某人开炮 = to blast someone publicly.