(Yicai Global) Sept. 3 --  China has expressed firm opposition to and strong condemnation of the hydrogen bomb test the Democratic People's Republic of Korea carried out today.

China's Foreign Ministry urged the DPRK to comply with relevant United Nations Security Council resolutions.

The DPRK should stop acting improperly in ways that worsen the situation and do not fit its interest, and should use dialog to solve problems, the ministry said.

China will fully implement UN Security Council resolutions with respect to the DPRK, the ministry said.

China is determined to push forward denuclearization of the Korean Peninsula and maintain peace and stability in the region.

The 6.3-magnitude shallow earthquake that shook the northern portion of the Korean Peninsula earlier today was caused by a hydrogen bomb explosion,  the government of the DPRK said in an official announcement.

The DPRK has successfully tested a hydrogen bomb designed to be mounted on its newly developed intercontinental ballistic missile, its state media reported.

The H-bomb test ordered by leader Kim Jong Un was a "perfect success" and was a "meaningful" step in completing the country's nuclear weapons program, DPRK state television reported.

The announcement came today in the hours following the detection of two tremors.

Minutes after the first, which happened at 3.30 a.m. Greenwich Mean Time, the China Earthquake Networks Center (CENC) reported a light shallow quake nearby, noting that it might be a collapse earthquake.

The CENC placed the magnitude of the first earthquake at 6.3 and the location of its epicenter at 41.35 degrees North latitude and 129.11 degrees East longitude, with a depth of zero kilometers.

A 4.6-magnitude earthquake occurred at 3.38 a.m. GMT at 41.21 degrees North latitude and 129.18 degrees East longitude with an epicenter zero kilometers deep, the CENC said in its latest update.

The DPRK has developed a hydrogen bomb that can be mounted on an intercontinental ballistic missile (ICBM), Pyongyang's state news agency KCNA claimed hours before today's detonation.