Writer-producer Adele Lim, who worked on the script for Crazy Rich Asians, now makes her feature directing debut with this likable and brash Asian-American comedy about four women leaving the US for a trip to the Chinese homeland; they come to terms with their roots in various ways, expressing sexualities queer and straight and of course celebrating friendship. It all barrels along, with a journey-of-discovery narrative template not entirely dissimilar to the recent Book Club sequel; the energy levels are high and there are some outrageous gags, between which the…