zhèlǐ fāshēng le wèntí.

perfective particle

Breakdown of zhèlǐ fāshēng le wèntí.

• 这里zhèlǐ: here
• 问题wèntí: problem

Questions & Answers about zhèlǐ fāshēng le wèntí.

Why is 这里 at the beginning of the sentence?

Chinese often puts time and place before the verb to set the scene.

So in 这里发生了问题, 这里 tells you the location first: here / in this place.

A very natural way to understand the structure is:

• 这里 = here
• 发生了 = happened / occurred
• 问题 = a problem / problems

So the sentence is built like:

• At this place, there occurred a problem

This is a common Chinese word order pattern.

Do I need 在 before 这里?

Not necessarily.

Both of these can be correct:

• 这里发生了问题
• 在这里发生了问题

The version without 在 is very natural and concise.
The version with 在 is a little more explicit: a problem happened here / at this place.

With verbs like 发生, omitting 在 is common when the place phrase is at the front.

What exactly does 发生 mean here?