China is marking its first annual National Security Education Day with a poster warning of handsome foreigners with secret agendas.

Titled "Dangerous Love," the poster tells the story of an attractive young Chinese civil servant, "Little Li" who meets a red-headed foreign man at a dinner party and starts a relationship.

Unbeknownst to her, "David" is a foreign spy and butters her up with compliments on her beauty, bouquets of roses, fancy dinners and romantic walks in the park.

After Little Li provides David with secret internal documents from her government propaganda office, the pair is arrested. In the final panel, Li is shown sitting handcuffed before two policemen who tell her she has a "shallow understanding of secrecy for a state employee."