Corruption is the biggest threat to China's Communist Party, President Xi Jinping said on Monday, in a clear warning that the ruling party is resolved to tackle a long-running problem that is now entrenched in many strata of Chinese society.

Issuing clear warning, Chinese leader says the party is resolved to tackle a long-running problem that is now entrenched in many strata of Chinese society

Observers have suggested that Xi has used an anti-corruption crackdown to eliminate rivals and entrench himself at the center of China's political hierarchy.