jìn lái
你进来，咱们俩好好儿谈谈心
Nǐ jìnlái, zánmen liǎ hǎohāor tántanxīn.
Come in, let's have a good heart-to-heart talk.
门开着，谁都进得来；门一关，谁也进不来。
Mén kāizhe, shéi dōu jìndelái; mén yī guān, shéi yě jìnbùlái.
When the door is open, anyone can come in; once the door is closed, no one can come in.