How to distinguish n and l, and how to read n and l well?

The way to distinguish between N and L pronunciations is that the tip of the tongue is upturned to the upper gum, the uvula is drooping, and air flows out through the nasal cavity. The pronunciation of l is that the tip of the tongue sticks up against the upper gum, and at the same time, the uvula is raised to block the passage to the nasal cavity, and the air flows out from both sides of the tongue. The situation that N and L are indistinguishable is mainly distributed in Hunan dialect, Gan dialect, Min dialect, southwest mandarin and Jianghuai mandarin, and their performances are different, and some of them can be interchanged, such as Lanzhou dialect; Some l's become n's, as in Chongqing dialect; Some n becomes l, as in Nanjing dialect. The situation is complicated. It is best for people in each dialect area to understand the expressions of N and L in their own dialect before correcting their pronunciation. (2) distinguish between reading n words and l words. On the one hand, pay more attention to pronunciation in radio and television, and memorize common words and phrases that read N and L, on the other hand, we can distinguish N and L words according to homophonic words. In the homophonic system of Chinese characters, there is generally no boundary. By remembering the initial pronunciation of a word, we can remember the initial pronunciation of a series of words. Such as: Nong (n)-Nong Nong Long (l) -Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long Long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long L sounds nasalized when pronounced, because the soft palate is not lifted enough and the tongue is wider, resulting in residual airflow leaking out of the nasal cavity. How to understand the correct pronunciation of n and l? Try the following comparison methods: Exercise 1: Prepare pronunciation according to the pronunciation requirements of N, hold your nose with your thumb and forefinger, and try to pronounce N. If you have a strong sense of holding your breath, it means that the position and method of pronunciation are correct. Loosen thumb and forefinger, read with vowel e or a, and n naturally becomes a sound; On the contrary, it is wrong. Exercise 2: Prepare pronunciation according to the pronunciation requirements of L, cover your mouth with your hand and try to pronounce L. If your cheeks are bulging and you feel breathless, it means that you meet the pronunciation requirements. Remove the palm of your hand and read with the vowel e or a, and l will naturally become a sound.