There was both quality and quantity at yesterday's busy Sha Tin work session with Ivan Allan's stable stars Mr Vitality, Privilege, Citadeed and Citiluck leading the way. Much has already been written about Mr Vitality's preparation which is going along smoothly and yesterday he went better than ever. Allan galloped him with his top stayer, Privilege, and Mr Vitality impressed as he eased a half to three-quarters of a length clear on the sandmesh. But Mr Vitality, like the good horse he is, only does the bare minimum in his work. Once he was that half to three-quarters of a length up, that's all he wanted to do. Privilege, himself, has come back working well and this could be the season when he's at his peak. He's as genuine as genuine can be and has never looked better in himself. The Group One-placed Citadeed and the exciting Citiluck worked together on the grass. Citadeed had impressed on looks in lighter work earlier this season, appearing more acclimatised than last term. He also trialled pretty well at Happy Valley last Friday. But yesterday it was Citiluck, who could develop into an exceptional performer this season, who looked to shade this solid grass hitout. Allan is aiming Citiluck at the International Cup and then the Derby. The Cup could be a bit rich for him at this stage but he is going to be hard to beat in the Derby and next season he may well stay the Classic distance of 2,400 metres and develop into a lovely International Vase prospect. It would have been hard to expect more from Citiluck yesterday. That's how much he impressed. In other work, the Lawrie Fownes-trained Trust Myself showed plenty of tenacity when sticking his neck out and really trying in his gallop with Straight Way, who needed his reappearance run. John Moore's Joint Account went down as one to follow in his solid piece with Zambezi who has yet to blossom. Geoff Lane's Shining Winner has really come on for his first-up third and is worth noting when next seen out. He was far too good for Laureate. Tony Cruz has Super Freighter looking a million dollars. He's really built up his condition and yesterday the Canadian import gave Medic Star a drubbing. David Hayes' Blazing Ballad did likewise to the more highly rated Super Missile and has improved a stack for his reappearance. Bruce Hutchison's Spartan easily outpointed the habitual track star Jubilation in a fine piece. He can be followed. There were also four all-weather trials with the Track Master dirt surface proving as popular as ever. Probably the best effort came from Moore's Hong Kong Legend who ran home strongly in the opener won by stablemate Happy Occasions who was tenderly handled throughout. Moore's stayer Able Shot also went well in winning the second heat. TRIALS First trial _ 1,050 metres: 1, HAPPY OCCASIONS (D. Whyte); 2, Increase Speed (K. S. Yu); 3, Hong Kong Legend (K. M. Chin). Others (in finishing order): Foursome, River Garonne, Emphasis, Gold Talent. Time: 1.05.4 (25.9). Distances: head, 1/2 length. Winner trained by John Moore. Second trial _ 1,050 metres: 1, ABLE SHOT (K. M. Chin); 2, Colourful World (C. K. Tse); 3, Kaapargen (K. C. Chan). Others: Lucky Clover, Drifting Away, Financial Fortune, Applause For Me, Eastern Saga, Fortune Ring. Time: 1.05.3 (25.2). Distances: neck, 2 lengths. Winner trained by John Moore. Third trial _ 1,050 metres: 1, WINNING LAD (K. M. Chin); 2, Master Merlin (D. Whyte); 3, Monkey Saint (C. M. Au). Others: Wang Tak Supreme, Lucky Express, King Chariot, Telecom Boss, Fortune Leader, Great Honour, Plenty Success. Time: 1.04.9 (25.6). Distances: 13/4 lengths, neck. Winner trained by John Moore. Fourth trial _ 1,050 metres: 1, FASHION DELUX (C. M. Au); 2, Spotlight (D. Lee); 3, Viva St Paul's (P. Strydom). Others: District Relative, Smart Kid, Best Endeavour, Gunner, Outsider II, Kewins, Palette Star. Time: 1.06.4 (26.7). Distances: 1 length, 3/4 length. Winner trained by Derek Cruz.