"1" and "Bengbu" are named because this place has been relying on Huaishui since ancient times and is good at producing pearls. Since it is named after a clam, the clam of the clam has only one pronunciation, beng (four tones) and Bengbu (four tones), which is a tradition left by the ancients.

2. Scientific research has found that the ancient sayings pronounced by ancient people are quite different from those pronounced by modern people. The most obvious thing is that there is no light lip sound, commonly known as lip-tooth rubbing sound. That is, when people pronounce, their upper teeth will touch their lower lips, and then the friction between them will produce airflow, which will come out from these two colliding gaps, so there will be pronunciations, such as F and V. In ancient times, these two sounds will correspondingly become the pronunciation of initial consonants with heavy lip sound.

3, heavy lip sounds are the opposite of light lip sounds, that is, there is no friction between teeth and lips, just the sounds made by lips, such as the pronunciation of B and P.

4. Moreover, the ancients were highly illiterate. As the saying goes, a scholar does not go out, but reads only half a voice. Half of the pronunciation of Bengbu mussel is Feng, and F is replaced by the corresponding heavy lip sound B, and the pronunciation of mussel (the fourth sound) appears.