The paintings are some of my originals for my designs and the blackboard is painted with blue blackboardpaint - it makes me so much happier than a black one.
画是我设计时的作品，黑板刷了蓝色的黑板漆。相比较黑色我更喜欢蓝色的。
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Now, I paint it on the blackboard, I hope you will be able to guess its name.