Premier Li Keqiang is set to embark on a busy trip that will cover three regions, with the goal of reassuring Eurasian countries of Beijing's commitment to enhanced interconnectivity and diversified trade.

Li's three-country journey will start in Kazakhstan on Sunday. He will then visit Serbia and Thailand.

Senior Chinese diplomats confirmed on Friday that connectivity and trade will dominate the to-do list and will involve economies in Central Asia, Central and Eastern Europe and Southeast Asia.