Hidden front means that when writing, the brush front is stored in the middle of stippling without being exposed, which is a kind of brushwork that pursues rich and round lines.
Dew front refers to the method of starting a pen with the nib exposed outside the stippling. That is, writing is not retrograde, generally referring to writing. Lu Feng's pen is usually based on the lateral front, which is smart and elegant. You can write in block letters and cursive script. Most cursive scripts begin with "Lu Feng". In addition, when the pen is closed, the pen tip is exposed, which is called "out of the front". It also belongs to exposed front, such as hanging needle and dovetail.