Qilai, one of the most commonly used directional complements in modern Chinese, indicates upward movement. Due to its frequent use, the meaning and usage of the term are included in most Chinese dictionaries and textbooks. In addition to basic directional meaning, qilai also provides aninchoativeor completive meaning when added to the beginning or end of a verb or an adjective. Its complicated semantic rules and diversified syntactic forms produce a steep learning curve for foreign students. Over the years, there have been many studies related to this directional complement, although they mostly focus on the analysis of the syntax and meaning of qilai serving as a verb complement. For the usage of adjective+qilai, there are only a few descriptions, such as "a state starts and keeps developing" (Lu, 1999) or "a new state starts" (Liu, 2001). But exactly what types of adjectives work with qilai? When can one use adjective+qilai? How does this usage work with other phrases? These questions have yet to be answered. Furthermore, in the past, researchers mostly used works of literature to analyze the usage of adjective+qilai. Take Fang (2001) as an example: while he studied such syntactic structure, the examples he mentioned were all from the literary works of Wang Meng, Lao She and Su Shuyang. Studies on this topic from social, living or scientific perspectives are still lacking, which is a pity indeed. Theresearch scope of this papercovers the Sinica Corpus, studying the usage of adjective+qilai in authentic materials. The result of material collection shows that in addition to literature, adjective+qilai appears in other types of writing, and can form four types of sentence patterns by combining with bu and le. Affected by bu and le, these sentence patterns can express different meanings. After our analysis, this study found thatonly adjectives with "indefinite numeral and controllable" semantic feature will fit into such structure.