It is normal.

Usually pasta is in the shape of long strips, so when cooking pasta, you should choose a deep pot and cover two-thirds of the pasta with water. This much water can ensure that the noodles can absorb enough water. , there will be no uneven heating! After the water in the pot boils, add an appropriate amount of salt. For 100g of pasta, add about 2 tablespoons of salt. Adding salt is not only to give the noodles a flavor, but also to make the noodles taste stronger. After adding salt, you can drop a little olive oil into the water to prevent the pasta from sticking after cooking. If you are used to my country's strong pasta, you will have the illusion that it is undercooked when you first encounter it. After eating it a few times, you will fall in love with the unique "springy" texture. This means that the cooking time of pasta requires a lot of time. Very accurate. After the pasta is put in the pot, stir it slightly with a spoon so that all the noodles are immersed in the water. Use the time on the packaging bag as a standard and wait until the pasta expands slightly and becomes lighter in color. At this time, use chopsticks to pick up a piece of pasta and cut it off with your hands until there is a white core the size of a needle tip in the middle of the noodle. Cooked noodles should not be cooked in cold water. Pasta is different from our traditional pasta. Water that is too cold will absorb excess water and directly dilute the flavor of the sauce. Therefore, when food experts cook pasta, they usually cook the noodles in one pot and the sauce in another pot. After the noodles are cooked, they immediately put them into the sauce and stir evenly to enhance the adsorption of the sauce to the pasta. The amount of sauce should be controlled so that it can coat every noodle. Do not let all the noodles soak in the sauce, which will affect the taste of the pasta.