China's moon rover, Yutu (Jade Rabbit), continued exploring after a "nap", according to the State Administration of Science, Technology and Industry for National Defence on Friday.

At about 8:00 p.m. Beijing Time, the six-wheeled rover started moving again after shutting down its subsystems on Dec. 16.

Yutu has had to deal with direct solar radiation raising the temperature to over 100 degrees centigrade on his sunny side, while his shaded side simultaneously fell below zero.

"The break had been planned to last until Dec. 23, but the scientists decided to restart Yutu now for more research time, based on the recent observations and telemetry parameters," said Pei Zhaoyu, spokesman for the lunar program.

Yutu separated from the lander on Dec. 15, several hours after Chang'e-3 soft-landed on Dec. 14. It moved to a spot about 9 meters to the north where Yutu and the lander took photos of each other.

Yutu will survey the moon's geological structure and surface substances and look for natural resources for three months, while the lander will conduct in-situ exploration at the landing site for one year.