Some cases of r-suffixation in Chinese involve phonological opacity.
有时这种音系变化还涉及音系不透明性。
2
Retroflex suffixation of place names is a very common phenomenon in Beijing.
北京地名的儿化现象十分普遍。
3
This paper investigates tone change induced by er-suffixation, showing that tones behave differently with respect to different types of morpho-phonological processes.