In the course of evolution, the variations of tones and vowels with Rusheng are in sudden phonetic changes because of the competition of phonetic systems between putonghua and the local dialect.

• 从社会语言学的角度看，在这场正在进行的演变过程中，声调的变异与入声韵母的演变都属于共同语与方言语音系统竞争之下的音类的突变。