This is a common phrase in Kashmiri that translates to "I miss you".
Here's a breakdown of the phrase:
* Tumh (तुम्ह) - You
* chyun (च्युन) - (a word used to indicate affection or longing)
* yaad (याद) - Memory, remembrance
* aavth (आव्ठ) - Come, arrive (used here to mean "comes to my mind")
You can also use "Tumh chyun yaad aayee" (तुम्ह च्युन याद आयी) which is a similar phrase, but uses the past tense of "aavth".
There are other ways to say "I miss you" in Kashmiri, but this is the most common and direct translation.