One day, when Laozi was traveling through the Hangu Pass in Henan from the east, a purple mist suddenly appeared in the air.

一天，当老子正从东边经过河南的函谷关时，一缕紫色的薄雾突然出现在空中。

youdao

Hangu biological stabilization pond was set up in 1993.

汉沽生物稳定塘建于1993年。

youdao

Have you been to Hangu Mody? Hangu district know about right?

你到过汉沽区么？对汉沽区了解多少？

youdao

"Today I have to withdraw the forces from Hangu,DI Khan, Swat and most of the bordering area,"

VOA: standard.2009.03.14

The attack on the mosque Friday took place in Hangu town, also in Khyber Pakhtunkhwa province.

WSJ: Militants Kill 23 at Pakistan Army Camp

Security personnel and civilians are thought to be among those who died in the attack in Hangu.

BBC: Attacks in Pakistan's north-west 'kill at least 19'

Seven were reported dead in a blast at a police checkpoint in the Hangu district of Khyber Pakhtunkhwa province.

BBC: Attacks in Pakistan's north-west 'kill at least 19'