Urgent for idioms or four-word words that describe class unity and close relationship, thank you!
Unite as one, unite as one, help each other in the same boat, share weal and woe, be of one mind * * *, unite sincerely, work together with Qi Xin, work together, work together in the same boat * * * *, share weal and woe, share weal and woe, join hands with father and son, and work together with Qi Li.