Hi there tracking number LV449401645CN, update says flight departed, but nothing since. Has the flight actually departed for destination country?

I've been waiting since February 27th for a package from China to USA. Tracking number: LY669791645CN
Tracking says flight departed, but USPS tells me it's still in China even though it's been 15 days since flight departed. Where is my package? I have two others from China to USA that have been stuck on flight departed for less time, but still no update, i'm very confused, please just tell me where they are. The tracking numbers are LY670714209CN and LY679081455CN. Are any of them still in China even though they said flight departed?

I have 3 packages from China to USA, and they're all stuck on flight departed, the longest being 3 weeks now. I'm 99% sure my package was lost, as whenever I call USPS they tell me it's still in China, even though it says flight departed. Please tell me where they are, whether it's in China or USA. The tracking number for the 21 days on flight departed: LY669791645CN . My other tracking number is LY679081455CN and has been on flight departed for 2 weeks. My third tracking number is LY670714209CN. I would just like to know the CURRENT LOCATION of my packages, please.