Nei-men used to be called Luohan-men or Luohan Nei-men. There are two explanations on where the names come from:
The first explanation:
Luohan, Hindi, has a status above Eminent Monks and right below Bodhi. They are believed to possess deep knowledge and are enlightened. Thus the residence area of a group of Luohan is called Luohan-men. According to legend, Nei-men was a community where the Native-Taiwanese lived and was a barbarian village that was nameless. During the late Ming Dynasty, Grand Secretariat Tai Han Si Mr. Shen Guang-Wen was upset that Zheng Jing was constantly changing his father's cabinet after Zheng took over the throne. As a result, Shen started to compose sarcastic writings regarding the incident. But it also brought numerous fatal threats against him. Shen thus escaped to Luohan-men, where he had settled down and become a teacher. Gradually, Luohan-Men became the birthplace of culture where humanity and literature assemble. The ex-cabinet members who had been fleeing with Mr. Shen Guang-Wen were mostly knowledgeable scholars and gentlemen. They brought all the books, built a school on their own, gave lectures and preached the ways of old rulers, creating a prosperous ambiance for the era. Thus, the latter generations started to give the name Luohan-men to a place where well-educated and scholarly people reside.
The second explanation:
Luohan-men is a Chinese word that was translated from the word RUOHAN from the Pingpu language. The word appeared frequently on old Dutch maps.
Upstream of the main river in the area, Er-ren Creek, reached the border of Rui-shan Village near Ma-tou Mountain and Nei-dong Village and turned to Tian-liao Township. Hills on each side of the shores are towering and steep, and the layers of soaring landscape are as if the Luohans are guarding at the two sides of the door. The basin that appears at the end of the valley seems to resemble an anteroom only found in Utopia. Therefore, ancestors took the Pingu word for RUOHAN and named the place Luohan-men.