They're both "Rin-chan" but Moke has a way of saying it where he can differentiate them
Rin-chan
Ah Ling
阿/ah is a Chinese name prefix used to indicate kinship/familiarity, somewhat equivalent to "-chan"Rin
chans❤︎Yuezheng LingKagamine RinRin-chan
Ling Jiang
Rin-chan transliterated into Chinese