The official non-manufacturing Purchasing Managers' Index (PMI) was at 51.1 in January versus December's 52.7, data from the National Bureau of Statistics (NBS) showed. The 50-point mark separates growth from contraction on a monthly basis.

While the world's second-largest economy broadly rebounded last year from 2020's pandemic-induced slump, the services sector has lagged the recovery as China's tough zero-COVID approach weighs on consumer spending.

China's official composite PMI, which includes both manufacturing and services activity, stood at 50.1, compared with 52.2 in December.

(Reporting by Emily Chow and Stella Qiu; Editing by William Mallard)