According to Lin and Peck, motion morphemes are first classified into scalar change (e.g., luo "fall", hui "return", jin "enter", equivalent to Talmy"s (1975) path verbs) and nonscalar change motion morphemes (e.g., gun "roll", equivalent to Talmy"s (1975) manner-of-motion verbs) depending on whether they lexicalize a scale or not.
a more refined explanation is necessary for the order of motion morphemes in Chinese.