柯九思(公元1290-1343)字敬仲,号丹丘生,浙江天台人。他的画,山水、花鸟俱佳,尤以画墨竹闻名。元代画竹依据画法不同可分为两派:工笔勾勒青绿设色者为“画竹”;以水墨写意者称为“写竹”。柯氏便是写竹派的代表人物之一。《清秘阁墨竹图》表现出了他以书法笔意写竹的观念。竹干的淡墨写出,竹节两端再复以重墨,干身坚挺,圆浑如篆,干与干之间虽无笔墨相连,但虚空处有意到笔不到之妙。竹叶顺枝而出,以浓墨枯笔写叶之阳面,以淡墨润笔写叶之阴面,皆为中锋行笔,片片竹叶沉着稳健,尤如楷隶。 Ke Jiusi (AD 1290-1343) word Jing Zhong, No. Dan Qiusheng, Tiantai, Zhejiang. His paintings, landscapes, flowers and birds are superb, especially painted bamboo famous. Yuan Dynasty bamboo painting based on the different methods can be divided into two camps: Pen sketching green-cyan color for the “painting bamboo”; ink freehand called “write bamboo.” Kofi is one of the representative write bamboo sent. “Clear Secret Pavilion ink bamboo” shows his idea of ​​calligraphy and writing bamboo. Bamboo dry light ink write, both ends of the bamboo again with heavy ink, dry body strong, rounded muddy seal, though not between the dry ink and ink are connected, but the void at the intention of pen to the wonderful. Bamboo leaves shu sticks out, to write ink thick leaves written in the sun, with light ink pen to write the negative side of the leaf, all for the center line pen, bamboo leaves calm piece, as Kai script.