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Analysts said Russia has also been a major source of crude for China, and the pipeline will be one of the latest energy cooperation between the two countries, which will help ensure China's energy diversification.

Analysts said the stronger performance of the service sector adds to the evidence that the Chinese economy is stabilizing and that the sector, which already accounts for more than half of China's GDP, will continue as a key growth driver in 2020.

Analysts, however, warned that electric startups shouldn't overestimate the importance of their IPOs.

An unidentified ROK government source was quoted by Yonhap as saying plans for the joint ROK-US military exercises in the first half of this year would be announced after the second DPRK-US summit.

And the top 30 companies will occupy more than 70 percent of market share in the future, it said.