U.S. and Chinese officials began a second day of talks in Stockholm on Tuesday to resolve longstanding economic disputes and step back from an escalating trade war between the world's two biggest economies.

The Stockholm meeting — following similar talks in Geneva and London in recent months — is set to extend a 90-day pause on those tariffs. During the pause, U.S. tariffs were lowered to 30% on Chinese goods, and China set a 10% tariff on U.S. products.

Wall Street chugged mostly higher in premarket trading as Chinese and U.S. officials begin a second day of trade talks.

Investors will be keeping a close watch on Chinese markets following reports that the U.S. and China will resume trade talks in Stockholm on Monday.