茫茫人海中遇见你人来人往中碰见你
[máng máng rén hăi zhōng yù jiàn nĭ rén lái rén wăng zhōng pèng jiàn nĭ]
The meaning here conveys something like 'Meet you in a sea of people' or 'Come across you amidst bustling crowds', indicating fate has made them encounter each other even though they may not know anyone in an overwhelming world.