In 1962 I published some evidence based on Han and early post-Han transcriptions to show that Chinese still had a sibilant final in certain departing tone rhymes at that period. I can now add some still later examples which bring the date down to the beginning of the sixth century, at least in the south. As will be shown below, the transcription evidence is also supported by contemporaneous rhyming practice, which still allowed contacts between Middle Chinese -j' < -s and -t.
1 For abbreviations and bibliography, see pp. 372–3.