BEIJING, May 19-- Chinese President Xi Jinping stressed "firm faith" and "absolute loyalty" to the Party in face of tough tasks to safeguard national security and social stability Tuesday.

Xi made the remarks at a meeting with some of the top agents from China's national security agencies.

National security agencies should strictly discipline themselves and forge a team, which is "determined, pure, trustworthy, devoted and competent," Xi said at the meeting.

Since China is facing complicated and fast changing domestic and international environment with huge uncertainty and risks, security agencies have the tough task to safeguard national security and social stability, Xi said.

The central leadership places great importance on national security and the country will step up efforts to prevent and crack down on activities that compromise national security, he said.

He also called on all Party and government departments to value, understand and support the work of the agencies.

Praising the national security agencies and their staff as loyal guardians and dedicated heroes, Xi said the Party and people will never forget their contribution.

Meng Jianzhu, head of the Commission for Political and Legal Affairs of the Communist Party of China (CPC) Central Committee, pledged that national security agencies will carry out Xi's instructions and follow the undivided leadership of the CPC Central Committee.

Guided by the "overall national security outlook" promoted by Xi, the agencies will learn from their previous achievements and experiences, sharpen their abilities and firmly protect national security and interests, Meng said.