First, the "small ancient town of Qianwei County" you mentioned refers to the small ancient town of Qianwei County, Leshan City, Sichuan Province.
Second, according to the law, the business licenses of enterprises and individual industrial and commercial households should be handled at the district-level administration for industry and commerce where they are registered.
Third, your personal business license should be handled in Qianwei County Administration for Industry and Commerce.
Fourthly, according to the information I found on Sichuan News Online, the contact information of Qianwei County Administration for Industry and Commerce is as follows (I have not confirmed the authenticity of the contact information).
Address: No.96 Wuyin Street, Yujin Town, Qianwei County
Postal code: 6 14400
Tel: 0833-4251116.
Fax: 0833-4253466
Fifth, if you can't contact the relevant institutions through the contact information mentioned in the fourth point, you can also call the enterprise registration consultation telephone number of Leshan Administration for Industry and Commerce (the contact information is from official website of Leshan Administration for Industry and Commerce, which can confirm the authenticity): 0833-2427373, 0833-2428355. Consulting Leshan can not only understand the policy of enterprise registration, but also ask the contact information of enterprise registration in Qianwei County.
The above suggestions are for reference only.