Where does “*ǯinǯü” come from?

*ǯinǯü (Khazar) comes from Common Turkic *yinǯü, from Middle Chinese 珍珠.

Ancestry of “*ǯinǯü”, step by step

Step	Language	Word	Meaning
1	Common Turkic	*yinǯü	—
2	Middle Chinese	珍珠	—