Well, Chunlan stopped building bikes a long time ago (when they were, there were 3 almost identical models on the Chinese market: 大地鹰王250-3；春兰250-3 and 钱江250-3) and their bikes weren't that popular.
They branched out into making air conditioners and eventually sold that business to LG, so there's no ChunLan company existing as of now (or so I heard).
But I got their bike right here.

Disclaimer:
This bike is built for show purposes only. It is illegal, has no paperwork and is unplated. I am not riding it anywhere downtown Nanjing out of respect and the lack of desire to break laws when I don't absolutely need to.
Anyway:
This is how the original bike looked like when bought for 2700 yuan from a shady guy in XianLin (that's like a forest area in Nanjing where cops never show up). The photo is from nj.58.com (a website that I found this piece of ... a bike on)

2300.jpg

This is what I decided to make of it at a momentary whim. All I needed was a couple of wrenches and a cutting tool.

2301.jpg

2302.jpg

2303.jpg

2304.jpg