During the course of a Sunday press conference, newly-installed Premier Li Keqiang said China and the US should refrain from intensifying their war of words on cyber attacks and national security.

A day after assuming charge as the new Chinese Premier, Li said - at the close of China's annual meeting of parliament - that China and the US should stop leveling "groundless accusation" against each other about cyber security, and should also avoid hacking into each other's computer systems.

Against the backdrop of a February statement by a US computer firm that a secretive Chinese military unit was probably launching a series of cyber attacks, chiefly targeting the US, Li said that rather than making baseless allegations against each other, China and the US should spend more time in undertaking practical attempts which can make a notable contribution to cyber security.

Noting that hacking is "a worldwide problem" and that China itself was one of the key targets of cyber attacks, Li said that China was "opposed to such activities," and did not support such attacks.

Meanwhile, a senior US official had earlier revealed on Friday that US Treasury Secretary Jack Lew - who is scheduled to visit China this week - will urge Chinese authorities to investigate and stop cyber attacks on US firms and other entities.