Excellent! Excellent! This film really injects the visual meaning of 'caution' throughout the film - at least till close to the finale. There are numerous instances when I was reminded of the film's appropriate title, "Lust, CAUTION"! Indeed, a remarkable visual achievement that cooks up metaphors to provide so much food for thought.<br /><br />Two characters, who are supposed to understand the nature of their duties and responsibilities, gradually becoming suckers to their self passions and sentiments not unrealistic for the many who may recall the 1963 Profuma Affair that brought down the Harold MacMillan government in Britain, or even the Mark Anthony and Cleopatra tales! In this film, the supporting actors play very minor roles in the film. This actually impresses me more to make me consider that a person's downfall oft results from his/her weakness, especially in relation to his/her uncontrollable passion and sexual urge. Love is blind... as the saying goes.<br /><br />The film's flashbacks are well crafted to introduce Mr. Yee and Jiazi and to focus on their persistent, strong and certainly up-to-no good, determined characteristics before they succumb to their sentimental temptations and passions. <br /><br />The scenes of stylistic elegance of the Colonial Hong Kong being clouded by Japanese Occupation, and scenes of Shanghai with its bleak post-Qing Dynasty signs of chaos, together with the expected Second Sino-Japanese War terror, flow through the film at a good pace. The urban crowded characteristics of these cities, with their tenement-blocked living, marked with social and political upheavals and turmoil, and class exploitation are artfully exhibited - the allure and historical trauma of both cities so subtly revealed without over-shadowing the performances of Tony Leung and Tang Wei! It was certainly captivating to watch how this film celebrates Hong Kong's urban identity while also mediating its historical relationship with Shanghai. Just like with Mr. Yee and Jiazi, perils and pleasures of modern urban life are inescapable for the two cities.<br /><br />Director Ang has also amusingly mixed Chinese sensibilities and Hollywood influences to give Shanghai that dangerously cool, and seductively sexy appeal that does help to raise question of the stake this city faces with the presence of Mr. Yee and Jiazi. After all, didn't Shanghai become a locus center of vice and degradation - a foil to the virtues of the countryside? Is the audience, at the beginning of the film, expected to see Mr. Yee and Jiazi as upholders of these opposing modern vs traditional traits, and as far as foreign occupation relates, the differences East vs. West colonialism? For fans of Zhang Ailing who authored the original story upon which this film is based, It's not difficult to relate some of the tragic incidences of the film to Zhang's very tragpersonal life. This film should especially appeal to those familiar with the 1940s history of Hong Kong and Shanghai, and to those who had experienced the inner turmoil, resulting from having to adapt to changing environments.<br /><br />And I do enjoy seeing this film as an attempt to remind the audience how a couple, passionate in romantic love, often puts in their best performances and stylistic acts to impress one another (as portrayed by Mr. Yee and Jiazi). These love 'sparks' have a tendency not to exist with old married couples as seen in Mr. and Mrs. Yee's love relationship.