In other words, the first syllable of each disyllabic word was rated on a 101point scale, which evaluated the degree of application of tone sandhi as well as the naturalness of tone production.
100 point referred to full application of tone sandhi rules in terms of native listeners' intuition which was close to native-like level, whereas 0 point indicated non-application of tone sandhi rules which was pronounced with a heavy non-native accent.