吵吵闹闹绝不言离弃磕磕绊绊绝不言分离
[chăo chăo nào nào jué bù yán lí qì kē kē bàn bàn jué bù yán fēn lí]
Amid quarreling and arguing, we never talk about abandonment; despite all ups and downs, we never mention separation. It portrays commitment even through disputes and challenges.