"Even if we are unable to hold a regular round of talks before late September, all the same it must take place as soon as possible," he said.
According to the spokesman, all participants of the talks must take maximum efforts to ensure the holding of the fourth round before late September.
The DPRK, South Korea, China, the U.S., Russia, and Japan are taking part in the six-sided talks on the resolution of the nuclear problem on the Korean peninsula. The previous round of talks took place in Beijing late June last year.
Chinese ambassador to the Russian Federation Liu Guchang told journalists in Moscow that the possibility of frustration of talks may become only the result of an old problem - lack of mutual trust between the U.S. and the DPRK.
"I have big hopes that they, as well as all interested parties, will display patience, cold-bloodedness, reserve and pragmatism to hold the fourth round in time," said the diplomat.
In his words, during Chinese State Council Premier Wen Jiabao's visit to Russia and his talks with the Russian leadership, the situation on the Korean peninsula will be discussed.
"Russia and China don't have contradictions on the DPRK nuclear problem, that's why all we can do is 'synchronize watches'," said the ambassador.
He stressed that both sides speak for a nuclear-free status of the Korean peninsula, for preserving stability and security on the peninsula and resolution of issues connected with the DPRK's nuclear program, by political and diplomatic means.