Meaning of zhī hòu:
zhī hòu
之后
Preposition
after; behind
Wǎn fàn zhī hòu wǒ men qù sàn bù.
晚饭之后我们去散步。
We go for a walk after dinner.
Adverb
(at the beginning of a sentence) afterwards; since then
Wǒ bān dào xīn de chéngshì zhīhòu, gǎnjué shēnghuó biànhuà hěn dà.
我搬到新的城市之后,感觉生活变化很大。
After I moved to the new city, I felt that life changed a lot.