第一个9叫久伴第二个9叫长久
[dì yī gè 9 jiào jiŭ bàn dì èr gè 9 jiào zhăng jiŭ]
The number '9' (九 jiǔ) in Chinese phonetically sounds similar to 'long' (久 jiǔ) and signifies 'forever' or 'a long time'. Thus, the meaning of 'The first 9 is called longevity companion, and the second 9 is called everlasting relationship'. It conveys the wish for long-lasting companionship and relationships.