Xīn'ān

Xin'an lies west of Luoyang on a historic route through the hills. Just east of the county town stood the Han Hangu Pass, established after Emperor Wu moved the pass eastward from its earlier site in 114 BC. It guarded the approach to the Han capital at Luoyang and later became known as Tongluo Fort. Although its ancient military role changed, the old gate tower was repaired in the Ming and remained a subject for poets who passed through Xin'an.