无论 / 不论 … ，都 / 也 … (regardless)

The suit-and-tie version of not to be concerned不管bù guǎn

no matter what or how无论wú lùn / whatever不论bù lùn … ，all / both都dōu / also也yě … = "regardless of …, (still) …".
无论谁wú lùn shuíto come来lái，all / both都dōuto welcome欢迎huān yíng = "whoever comes is welcome."
Same structure as not to be concerned不管bù guǎn, just more formal.

no matter what or how无论wú lùn / whatever不论bù lùn behaves like not to be concerned不管bù guǎn but reads more written.

regardless无论wú lùnwho谁shéicome来lái，all都dōuwelcome欢迎huān yíng。

无论谁wú lùn shuíto come来lái，all / both都dōuto welcome欢迎huān yíng = "whoever comes is welcome."

Practice

Whoever comes is welcome: ____ 谁来，都欢迎。

Practice

无论 / 不论 also needs an open option (a question word or A 还是 B).

Same job; no matter what or how无论wú lùn / whatever不论bù lùn = formal, not to be concerned不管bù guǎn = spoken.

Explore

无论 / 不论 is the formal 不管 — same open condition, same 都/也.

Practice

无论 compared with 不管 is…

Key idea

no matter what or how无论wú lùn / whatever不论bù lùn + (open choice)，all / both都dōu / also也yě … — "regardless of …, (still) …"
无论谁wú lùn shuíto come来lái，all / both都dōuto welcome欢迎huān yíng
Formal twin of not to be concerned不管bù guǎn (also needs an open option)