Meaning of qián mén:
前门
Qianmen subway station on Beijing Subway Line 2; front door; main entrance; honest and upright approach (as opposed to 後門|后门, back-door or under the counter)
Wǒ jīntiān cóng qiánmén dìtiě zhàn chūfā qù shàngbān.
我今天从前门地铁站出发去上班。
I started my journey to work from Qianmen subway station today.
Wǒ bǎ yàoshi wàng zài le qiánmén.
我把钥匙忘在了前门。
I left the keys at the front door.
Qǐng cóng qiánmén jìnrù huìchǎng.
请从前门进入会场。
Please enter the venue through the main entrance.
Wǒmen yīnggāi tōngguò qiánmén jiějué wèntí.
我们应该通过前门解决问题。
We should solve the problem through the honest and upright approach.