I visited several electronics markets in Beijing in the past, but all I saw was computer and cell phone
parts and consumer electronics. Is there a market for ICs, transistors, LEDs, breakout boards etc?
I will be in Beijing and Tianjin over a weekend so anywhere within a day trip is good.
Shenzhen seems to be the hot spot for components.
Check out these guys: they've run "tour groups for hackers" http://dangerousprototypes.com/blog/tag/china/ (http://dangerousprototypes.com/blog/tag/china/)
There's a ton of info about the Shenzhen market, but unfortunately that is a 3 hour flight plus car ride from Beijing. That's a bit much for hacker sightseeing and maybe buy a few bits. I'm hoping there is something in the northeast.