Hi Hui Min,

It's waiting for the receiver in China to pay for the tax now. You need to contact the receiver in China to ask if he has received the notice from the customs. If no, let him call China customs service number 12360 to check.

Number: RC790382429SG
Package status: In transit
Country: Singapore -> China
Destination:
2021-04-08 10:22 Nanjing, taxable mail, to be paid by the recipient
2021-04-06 16:19 Nanjing, import customs remain to be verified
2021-04-04 10:14 Nanjing City, Arriving at Nanjing International Mail Processing Center (via)
2021-04-04 01:52 Shanghai, Leave Shanghai International Mail Processing Center, Next Stop Nanjing International Mail Processing Center (via)
2021-03-27 20:16 Singapore, Singapore has been exported straight
2021-03-27 19:37 Singapore, departure from the Overseas Export Swap Bureau (not yet arrived at China Post)
2021-03-27 19:37 Singapore, leave the Singapore Processing Centre