世界之大唯你独一世界之大唯你无二
[shì jiè zhī dà wéi nĭ dú yī shì jiè zhī dà wéi nĭ wú èr]
'In this big world, you are unique and there is no second you', emphasizes someone’s irreplaceability and uniqueness in the eyes of another person. Despite its vastness, the one remains uniquely special.