U.S. negotiators said Sunday that “substantial progress” was made and “perhaps the differences weren't so large” after two days of negotiations with a high-ranking Chinese delegation on ways to ease a trade war sparked by President Donald Trump's steep tariffs.

China's official news agency took a tough approach Saturday, saying China will “firmly reject any proposal that compromises core principles or undermines

No major breakthrough was announced in trade discussions that lasted more than 10 hours Saturday in Geneva. Talks are set to continue Sunday.