How many days does it usually take to mail a parcel from Weihai, Shandong Province to Chongqing?

It takes 4-1 days to send a parcel from Weihai, Shandong Province to Chongqing by ordinary express parcel, and

It takes 7-2 days for ordinary parcel, usually about 1 days.

that's true, but in fact, sometimes, it is mailed to Chongqing, and it may take half a month to inform you to pick it up. This happened to me. I didn't receive their notice until a month later, and I didn't care if I lost it at the post office. So I suggest you use a courier company. Although it's more expensive, it's more insured. I hope you will think it over.