This chapter examines the semantics of additives in Mandarin and Cantonese, and begins with additive adverbs in Mandarin, followed by additive adverbs and post-verbal particles in Cantonese. It focuses on Mandarin additive adverbs, particularly you ‘again/too’, ye ‘also’, hai ‘still’, and zai ‘again’, with comparison made between Mandarin additive adverbs and their Cantonese counterparts. Mandarin generally appeals to syntactic constructions and additive adverbs, and is less productive in semantic post-verbal particles. Apart from additive adverbs, Cantonese is particularly rich in post-verbal particles, including verbal suffixes and sentence final particles. Mandarin and Cantonese demonstrate a nice division of labour when accounting for data in additive quantifications between the two.