The meeting between Bush and Deng took place on 26 February 1989. Shortly after the Chinese government established the Stock Exchange Executive Council (SEEC) in March 1989 to create a nationwide treasury bond trading system.

Goldman Sachs writes in an article published on its website:

"On December 19, 1990, the Shanghai Stock Exchange reopened, the same year as the development of the financial hub of East Shanghai (Pudong) started. The Shanghai Stock Exchange restarted operations in the former Pujiang Hotel on the city’s waterfront and had computer terminals linked to other trading counters in the city and in cities around China. On July 15, 1991, the Exchange launched its first stock index."

These facts demonstrate the speed of the developments in US policymaking towards the end of the Soviet era. They clearly show us that China would be the preferred party. The former communist regime in the east was to be the US government's new best buddy, while Russia was shoved out in the cold, economically and politically.

https://www.goldmansachs.com/our-firm/history/moments/1990-shanghai-stock-exchange-reopens.html