China will continue to be world economy's stabilizer in 2019 with uncertainty in the first half of the year and relatively stable status in the second half, an expert said in Beijing on Saturday.

In the first three trading days of 2019, the fluctuations in the US stock market due to movements in Chinese market reflects the impact of Chinese economy, said Li Daokui, an economist of Tsinghua University, at the 2019 Impact Summit.

Li said China will contribute more than 30 percent to the world economy this year with investment in fixed-asset relatively stable in the second half and more job opportunities in service sector.