吵吵闹闹从不言离弃磕磕绊绊从不言别离
[chăo chăo nào nào cóng bù yán lí qì kē kē bàn bàn cóng bù yán bié lí]
This phrase indicates that despite constant quarreling and numerous obstacles ('clashes'), no party talks about giving up on the relationship. In other words, regardless of difficulties and discord, they will never mention separation.