How the outmoded computer systems at China's brokerages are the weak link in China's stock markets. Even though the Shanghai stock exchange computer systems are modernized the brokerages computer systems are falling behind and have not seen the level of investment and attention as the major exchanges. this could be a real problem in a downturn without access to terminals in crowded facilities investors not able to get out of the market may create panic. And overloaded computer systems have crashed in the past and could do so again. In China investors are responsible for executing their own trades rather than leaving orders with a broker so having access to a terminal and for it and computer systems to function properly are really important to investors in the market. This could be a aggravating factor if there is a severe loss of confidence in the market.