The word 所谓 is used to make collocations that have the purpose of negating something, and has the meaning “so-called”: the so-called lesson, the so-called award.
In a sentence, the particle 的 is usually placed between 所谓 and a noun.
When did this so-called accident happen?
zhè chǎng suǒwèi de shìgù fāshēng zài shénme shíhou
A speaker doesn’t consider it an accident.
所谓 can have the meaning "what is called...". This word is often used in the structure 所谓…就是… .
This structure is used to explain a certain thing or phenomenon. This explanation can be based on a fact or opinion.
In this case, there is no negation.
HSK is the Chinese proficiency test
suǒwèi HSK, jiùshì hànyǔ shuǐpíng kǎoshì
Foreign students are those who study abroad
suǒwèi liúxuéshēng, jiùshì zhǐ zài guówài xuéxí de xuéshēng
In a sentence, a word indicating a person or a group of people can sometimes be placed before 所谓. In this case, the particle 的 is usually placed after 所谓.
What we call the solar system is actually the whole universe
wǒmen suǒwèi de tàiyángxì shíjìshang jiùshì zhěnggè yǔzhòu
By good family, he means living in a big house with a wife dressed in pretty clothes
tā suǒwèi de hǎo jiātíng jiùshì zhù zài yí dòng dà fángzi lǐ, qīzi chuānzhuó piàoliang de yīfu