Many of the signatures of fake paintings are pieced together from the signatures of the author's paintings. The reason is to avoid people finding the basis for their forgery. Such signatures are incoherent and obviously consist of several parts, which can be easily found by careful observation.

未托裱过的书画还可以从背面来观察落款，如行笔中在不该停顿的地方停顿，比方说一横或一竖的中间，此款必假无疑，人们在落款时只要稍有犹豫，笔尖就会在宣纸上留下墨点，这类墨点，从画的正面很难看出来，从背面看却十分明显，真款是很少会留下墨点的。

For example, when you pause in the middle of a horizontal or vertical line, it must be false. If you hesitate a little, the nib will leave ink dots on the rice paper. Such ink dots are hard to see from the front of the painting, but very obvious from the back, Real models rarely leave ink spots.

落款是否贯气，若不贯气必有问题，正常的落款，字与字之间在气韵，是贯通的。

If not, there must be a problem. In a normal way, there is a connection between the characters.

从名款的用笔上来观察。怎么鉴别复制书画，任何一位书画家，不论他的名款有多少种形式，若把他们不同时期的名款拿出来作一下比较，就不难找到其变化的规律，只要消费者不断观察，认真思考，多向人士及有经验的人请教，就一定会辩真假、明是非的。

From the pen of famous money. How to identify and copy calligraphy and painting? No matter how many kinds of famous money there are, it is not difficult for any calligrapher or painter to find out the law of change if they compare their famous money in different periods. As long as consumers keep observing, think carefully, consult people and experienced people, they will be sure to distinguish the true from the false and tell right from wrong.