Complex sentence: There are also western pastries in China, like mille-feuille, crème brûlée and cheesecake, but they are generally not as popular because the Chinese preference of dessert is mildly sweet and less oily.
Split into simpler sentences: There are also western pastries in China, like mille-feuille, crème brûlée and cheesecake, but not many of them are welcomed. Because the Chinese preference of dessert is mildly sweet and less oily.