Consult "B.5. Training details" in the paper

[jingmingtao]

I don't understand the description of "Then, we randomly select n style glyphs with the same style as the target glyph, and n content glyphs with the same character as the target glyph for each target glyph". Does this mean that style fonts and content fonts must have the same characters? Is it OK if the number of characters in my style font is 556 and the number of characters in my content font is 6763?