How to evaluate the British showdown? How to understand the plot?

England vs Britain is a single-player heroic action film, which can be understood from the perspectives of different roles.

Guan (Jackie Chan) participated in the Vietnam War and served as a special soldier when he was young. But now, he has gathered all his strength, opened a small restaurant in Chinatown in London, England, and lived alone with his daughter (Liang Peishi).

My daughter was killed in a terrorist attack. The inaction of the British authorities made him even more indignant. At this time, the key figure Liam hannis (pierce brosnan) appeared in his field of vision.

The experience of risking one's life in the war made Guan keenly realize that hannis must have information about this terrorist attack. So Guan called several times to ask hannis to provide clues for himself, but hannis refused. Desperate Guan decided to avenge his daughter in his own way. Therefore, he refused to keep his lover Lin Baoyi (Tamia Liu) and embarked on the road of revenge for terrorist organizations. But what he didn't know was that an intricate plot was slowly unfolding in front of him.