What color does Wenchang brush hang?

Black, gray and blue. Wenchang pen is a kind of feng shui pen, which can flourish. In ancient times, anyone who took the imperial examination or wanted to promote his career with both civil and military skills had to worship Emperor Wenchang for good luck. Now, some people associate a pen or brush with Wenchang and create a new mascot, called "Wenchang Pen", which is mainly used to wear or put it in a suitable feng shui position to promote Wenchang's wealth.