It's not hard from Hong Kong (you do need a China Visa) - essentially you take the Hong Kong subway (last bit's really a train, but part of the subway system, l

It's not hard from Hong Kong (you do need a China Visa) - essentially you take the Hong Kong subway (last bit's really a train, but part of the subway system, light blue line) to Lo Wu, exit the subway, walk thru HKG immigration exit, cross a bridge, thru China immigration, back down into the subway (green line), 5 stops to HQB. It's worth hunting down one of the Hardware hacker oriented maps like: http://dangerousprototypes.com/docs/File:Hqb-map-front.png http://dangerousprototypes.com/docs/File:Hqb-map-front.png or http://www.seeedstudio.com/document/pdf/Shenzhen%20Map%20for%20Makers.pdf http://www.seeedstudio.com/document/pdf/Shenzhen%20Map%20for...