Li Ning is fine, I have had two pair of trainers from them with absolutely no problems, not the cheapest around but certainly not in the Nike/Addidas bracket either. Other companies here I have bought from successfully are Red Dragonfly and Hot Winds.

Shanghaitang is recommended as a  luxury Chinese brand.    

here is the website.http://www.shanghaitang.com/

Li Ning...it is a famous  brand in china.  but i think some of girls don't agree with you....

there are some of  fashion brands in china,, eg ZARA H&M GAP....but  that is foreign brand....  in china  fashion brand ... maybe you could see that named "红英（hong ying）" by artists . The company has built  since 1995 in china

 for the business suit:

http://s.taobao.com/search?spm=a230r.1.8.17.ZOdQuE&q=%C9%CC%CE%F1%C4%D0%D7%B0%C6%B7%C5%C6&initiative_id=listz_20130218&tab=all&newpre=null&bcoffset=1&sort=sale-desc#J_Filter

for the sports clothes:

http://s.taobao.com/search?spm=a230r.1.8.18.PPjJPS&q=%D4%CB%B6%AF%C4%D0%D7%B0%C6%B7%C5%C6&initiative_id=staobaoz_20130218&newpre=null&bcoffset=1&sort=sale-desc#J_Filter

All famous brands are there.

I have some stuff from Meters/bonwe (shorts & tshirts) that seems to be good quality.

also, I like Gold Lion. 

I prefer "the Emperors New Clothes" so I wish the locals in China would keep up their great tradition of copying enabling more of the local girls to wear them.

The other great advantage would be that not many locals would admit that they can't see them because of the huge potential loss of face.

Probably a bit on the chilly side in winter though.

Li Ning and Anta are decent. I have a pair of Anta sneakers that are really light and OK to jog with.

I'm in Guangzhou and I see a lot of Yishion stores. The clothes are of decent quality.