A Review of Research on Vocal Tones in Hebei Dialects

Since the 1980s, research on Hebei dialects has made great achievements, and study tone been gradually deepened. Before 1990, tones of mostly focused citation tones, was limited to synchronic description specific dialect spots. After 1990s, turned from analysis diachronic evolution tones. At same time, increasing attention paid ancient forms contained in sandhi relationship between sandhi.