The equation of asymptote is y 2/3x = 0, and the hyperbolic equation can be set to y 2-(2/3x) 2 = t, and then the value of t can be determined by the intersection point m of hyperbola. Reason: Knowing hyperbola can determine the unique asymptote; Knowing the asymptote, it is impossible to determine its focus. Do it my way and avoid discussion.