The lifeline of both hands was cut off in the middle. What does this mean?

Hello, first of all, I am a medical student. In genetics class, the teacher told us the fingerprints and palm prints on my hands, including the lifeline mentioned by the landlord. The so-called landlord lifeline is actually a superstition of fortune telling. There are also many palm prints. If there is a break in the middle of the lifeline according to the old saying, it means that there will be big bumps in life, but it should pass. Generally, nothing serious will happen. It can also be considered as rebirth from the fire and rebirth from nirvana. This is what the genetics teacher said. He also said that this situation in life can't represent anything. The reason why hands are so long is the result of heredity. This situation is normal, so the landlord need not worry. According to superstition, there will be great trouble, but you will survive.