What does this Chinese mark mean?

by Min Faisal
(Indonesia)

Hello,

I just opened my old grandfather's cubboard and found the Chinese jar with such Chinese mark. I already showed and asked a question to one of Chinese art expert, and he explained that this mark is Ming - Jiajing period but this mark was from private kiln in Ming of Jiajing reign. However, He indisposed for doing more about this mark since he is a fee-based Appraiser.

My question is:

1. What does this Chinese mark mean?
2. What was private kiln of this mark when Jiajing of Ming reigned?

Thanks a lot for the help.

Regards,

Min Faisal