<p>This paper focuses on a subset of non-scalar non-culminating accomplishments in Mandarin and examines how transitivity alternations of change-of-state (COS) verbs affect culmination entailments. While transitive COSs allow non-culminating readings, intransitive COSs always entail culmination. Based on the Distributed Morphology framework, I propose a detailed syntax-semantic interface account that Mandarin transitive COS verbs are packaged as manner verbs headed by v<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10831_2025_9305_Article_IEq1.gif" Format="GIF" Height="9" Rendition="HTML" Resolution="72" Type="Linedraw" Width="17" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{\textsc {do}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mstyle mathsize="0.6em"> <mi mathvariant="normal">D</mi> <mi mathvariant="normal">O</mi> </mstyle> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> and intransitive COS verbs as result verbs headed by v<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10831_2025_9305_Article_IEq2.gif" Format="GIF" Height="9" Rendition="HTML" Resolution="72" Type="Linedraw" Width="46" /> </InlineMediaObject> <EquationSource Format="TEX">\(_{\textsc {become}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow /> <mstyle mathsize="0.6em"> <mi mathvariant="normal">B</mi> <mi mathvariant="normal">E</mi> <mi mathvariant="normal">C</mi> <mi mathvariant="normal">O</mi> <mi mathvariant="normal">M</mi> <mi mathvariant="normal">E</mi> </mstyle> <mrow /> </mmultiscripts> </math></EquationSource> </InlineEquation> underlyingly, given that Mandarin typologically exemplifies overall suppletive causative-inchoative alternations and a dichotomy in culmination entailments that only underlying transitive COS verbs allow non-culmination.</p>