This paper tried to probe the merging tones and the application of sandhi rule for unchecked tones (/24/ and /33/) in Hailu variety of Hakka language. Generally speaking, the sandhi rule was applied in both the younger (under 30) and the older (above 50) groups. Tone merging phenomenon (/24/ merging toward /33/) was not found in the older group. Yet, the merging phenomenon was found in the younger group. The sandhi rule for /24/ and /33/ was not observed in most of the young speakers. It is proposed that the /24/ and /33/ tones were undergoing sound change by the younger generation.
Bibliographic reference. Lyu, Shao-ren / Pan, Ho-hsien (2013): "Reexamine the sandhi rules and the merging tones in hakka language", In INTERSPEECH-2013, 287-290.