Wolfram Eberhard,
A History of China
“ With the continued success of the northern campaign, and with Chiang Kai-shek's southern army at the gates of Shanghai (March 21st, 1927) , a decision had to be taken. Should the left wing be allowed to gain the upper hand, and the great capitalists of Shanghai be expropriated as it was proposed to expropriate the gentry? Or should the right wing prevail, an alliance be concluded with the capitalists, and limits be set to the expropriation of landed estates? Chiang Kai-shek, through his marriage with Sun Yat-sen's wife's sister, had become allied with one of the greatest banking families. ”
