1. I found the same thing as you:
Parcel No.03160772849 tracking result
2016-05-24 15:10:45.0 Electronic Data Received
2016-05-28 15:59:59.0 parcel center received

2. This type of parcel is what is called China Post Small Packet Plus, can only be track in China. Sometimes there is more tracking and sometimes not. Your parcel does not have a lot of tracking but this does not mean the parcel is not moving to your country Spain. This type of parcel is the last priority for mailing a parcel to overseas.

3. China Post Airmail Parcel Estimate Arrival Time for Spain is 2.5 to 5 weeks, your parcel is at the 5 weeks mark. May I suggest you contact seller and ask him what is going on with your parcel. He might be able to contact China Post: 11185, to find out.

Hope this help.

1. Technically yes and no, like I said in my post earlier, your parcel is the last priority meaning last Mail Bag with your parcel to take the Aircraft for your country.

2. Personally I have seen parcel with that type taking 2 month to arrive to me in my country.

3. Just make sure that your buyer protection is still valid and if you don't receive anything after 2 months then open a dispute with the seller to get your money.

4 Most of the time when I shop on Ali Express I try to get a seller to have the parcel mail by Registered mail even if I have to pay and extra $1 or $2 . Then most of the time you can follow your parcel all the way even maybe in your country.

5. As far as inquiring your Spain Post, this can not be done because the parcel is not registered. Please also take into consideration that your parcel has to go through Customs Office to get clear, that could also delay your parcel.

Hope the above information will help you.