President Trump is the man behind wall street.

Just a tweet from President Trump that he and President Xi would have an extended talk at G20 sent the stock markets rallying.

If the trade talk falls out between the US & China at G20, the stock markets will fall hard and fast too.  How do we determine the progress?

If Trump is going to insist on his previous terms, the trade talk will fall out.

If Trump is going to discuss the Hong Kong extradition bill and protest with Xi, the trade talk will fall out.

If Trump is going to threaten Xi with additional tariffs, the trade talk will fall out too.

We just need to observe the discussing issues between Xi and Trump to predict the outcome of the trade talk.