The rules for publishing books should choose 10.5 point on the font id, and the spacing should be adjusted as needed.

If the arrangement is the current poem, 10 is enough (it is best to use thin black and thin lines, etc. For fonts, the layout will be more tidy).

If the typesetting is an album, the font size can be handled according to the needs of the layout.

There is no absolute fixed usage of death. For books published formally, 10.5 is usually used in the general market.