有你在，足矣。
With you here, that is enough.
矣
classical final particle, similar to modern 了
particle HSK 3.0 · Band 7
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
矣
Nice writing!
See it in sentences
现在走，晚矣。
Leaving now is too late.