NIGHT racing on the grass at Sha Tin will become part of Hongkong life on May 22 - and it is certain to be a case of all roads leading to the New Territories. The chief executive of the Royal Hongkong Jockey Club, General Guy Watkins, announced yesterday that the programme would go on as originally planned on May 22. ''We are absolutely on target with the lights and we will have our Sha Tin night turf meetingas planned. ''But to test the lights we will have barrier trials there on the evening of May 4. There will probably be three of them,'' said Gen Watkins. Night meetings at the city track of Happy Valley have always proved a major hit with race fans and it is expected that this popularity will be readily reflected at Sha Tin where capacity is much higher. And the Jockey Club have already penned in night turf fixtures for Sha Tin in their calendar for next season. The new racing season will begin on September 11 with the curtain falling on June 5. There will again be 69 meetings. The position of Club jockey will be officially abolished next season with incumbent John Marshall the last of a number of riders over the past few years directly employed by the Club. Instead, the Club will issue three-month licences to recognised international jockeys and permit two of them to ride in the territory at any one time. However, as in the present season, only one jockey will be granted an international one-month licence at any time. With the International Races just over a month away Gen Watkins, yesterday refuted suggestions that there was another viral outbreak at Sha Tin. The chief executive was commenting on stories, which quote champion trainer John Moore, that horses at Sha Tin were again infected. ''We have had no case of equine influenza since December 18. There is absolutely no recurrence and I totally refute these claims. ''There has been no trace of any sort of virus in the samples taken regularly,'' he stressed. The Club have regularly sent all swab samples to the Hongkong University and also to Equine Research headquarters at Newmarket, England. As previously stated by the Club's chief veterinary surgeon, a number of horses have shown post-viral symptoms of elevated temperatures, loose bowels or constipation and generally being ''off colour''. The Club will act in an interesting new role as agents for owners who wish them to buy private purchase griffins. The last subscription griffins are currently being bought for next season but from the 1994-1995 season all griffins will be bought privately. But owners not wishing to go to the trouble of buying their own horse can ask the Club to act on their behalf. Gen Watkins said: ''We will tell owners who wish us to act for them that the minimum price will be $200,000. There is no maximum.'' A number of ballot papers have already been returned to the Club for griffins and a sizeable percentage have already asked the Club to find them a horse.