「阿公店」是今日的岡山，清代又稱「竿蓁林街」，位於鳳山縣城往臺灣府城的官道上，1720年成為商業集散中心的市街。由於清代臺灣沒有統一的度量衡，因此各地於市街中心的廟宇置放公斗，以便市場交易的進行。
During the Qing Dynasty, Angongdian was known as Gangzhenlin Street, located on the official road from Fengshan County to the capital city of Taiwan. In 1720, it became a commercial hub and market center. Due to the lack of standardized measurement units in Qing-era Taiwan, a public measuring container called “gong dou” was placed in the central temple of the market street in each region to facilitate transactions.