I love this houseplant precisely because it blooms with abundant bright flowers in the middle of winter, in December - January. source I don't know for what reason, but this year my cactus for some reason

蟹爪兰（学名：Zygocactus truncatus (Haw.) K.Schum. ）仙人掌科附生肉质植物，灌木状，茎悬垂，多分枝无刺，老茎木质化，幼茎扁平；鲜绿色或稍带紫色，顶端截形，花单生于枝顶，两侧对称；花萼顶端分离；花冠数轮，雄蕊多数，浆果梨形。 花期从10月至翌年2月；室内栽培的蟹爪兰可通过控制光照来调节花期。