lái dōu lái le cháng yòng lái quàn zì jǐ huò bié rén jì xù zuò yī jiàn shì jì rán yǐ jīng lái le jiù jìn qù kàn kàn jì rán pái duì le jiù zài děng yī xià

“来都来了”常用来劝自己或别人继续做一件事：既然已经来了，就进去看看；既然排队了，就再等一下。

The expression 'since we're already here' is often used to persuade oneself or others to continue an activity: since you've come, go in and take a look; since you've queued, wait a bit longer.