乱弹琴 (luàn tán qín) — to talk nonsense; to act foolishly; to mess around

Definition

Examples

• 你别乱弹琴了，好好想想这个问题。
  Nǐ bié luàn tán qín le, hǎo hǎo xiǎng xiǎng zhè ge wèn tí.
  Stop talking nonsense and think about this problem properly.
• 他说的全是乱弹琴，没有一句是真的。
  Tā shuō de quán shì luàn tán qín, méi yǒu yí jù shì zhēn de.
  Everything he said was nonsense — not a single word is true.
• 你这么做简直是乱弹琴，完全不合规矩。
  Nǐ zhè me zuò jiǎn zhí shì luàn tán qín, wán quán bù hé guī ju.
  What you're doing is just foolishness — it totally doesn't follow the rules.