Let&rsquos play a game of word association. If we throw the phrase &lsquolunar cycle&rsquo at you, what&rsquos the first thing that comes to mind Is it werewolves The occult Or perhaps E.T pedalling across the moon For many travellers and locals in Vietnam, these words can only point to Hoi An&rsquos lantern festival. Also known as the Full Moon Festival, it&rsquos an enchanting practice held by townsfolk on the 14th day of every lunar month. As twilight shifts to dusk, fluorescent fittings in the Old Town are replaced by the soft glow of silk lanterns. Residents indulge in music and poetry, and honour their ancestors at shrines and the Thu Bon river. Tourists, of course, aren&rsquot left far behind. They throng the quarter&rsquos warmly-lit markets and alleys, photo-happy, as older townspeople occasionally glance up from rounds of traditional Chinese chess.