Is it four French printing or three French printing?

Three French seals and four French seals are actually the same thing, because the last of the four French seals is the result of practicing the first three French seals, and the real practice has been included in the first three French seals. The first three French seals are the cause, and the fourth French seal is the result. If the first three French seals are completed, we can reach the fourth realm of French seals.