Abstract: Disclosed in the present disclosure are crystal forms of a fused ring compound, and a composition thereof, a preparation method therefor and use thereof. The crystal forms comprise a crystal form I, a crystal form II, a crystal form III, a crystal form IV and a crystal form V, which have, when using X-ray diffraction, characteristic diffraction peaks at about 11.3 degrees, 17.2 degrees and 21.1 degrees, at about 25.1 degrees, 21.2 degrees and 14.1 degrees, or at about 6.6 degrees, 13.4 degrees and 8.0 degrees, at about 11.8 degrees, 13.3 degrees and 16.7 degrees, and at about 6.5 degrees, 13.3 degrees and 20.0 degrees. The crystal form I or IV is obtained by dissolving a fused ring compound in a proper solvent, followed by stirring, filtering and drying. The use of crystal form I or crystal form IV in preparation of anti-cancer drugs for inhibiting phosphatidylinositol 3-kinase. The use thereof for targeted therapy for tumors, and for anti-inflammation or treatment of autoimmune diseases.

Abstract: Disclosed is an innovative app promotion platform that resides in a host app and utilizes third party apps' data (e.g. its app icon, graphics, video, and music) to dynamically create short-session mini games (e.g. quiz or picture puzzle) that can be played by the users. After playing the mini game, users will receive rewards that can benefit them in the host app. This new advertising approach is non-intrusive, provides deeper engagement from the users, thus creates better result for the advertisers. The platform comprises of two components—a mechanism to dynamically generate mini games (Short session based, data-driven) and an achievement window, which contains info to promote the third party app and gives users in-app rewards. The platform may be expanded in a global scale through offers of software development kits that allow other game developers and advertising networks to integrate the platform into their own games and networks.