'Shēng yuán' literally means 'voice support' — combining 声 (shēng, 'voice' or 'sound') and 援 (yuán, 'aid' or 'assistance'). It refers to offering public, vocal, or symbolic moral support — not material help — to someone facing difficulty, injustice, or adversity. Unlike physical assistance, shēng yuán emphasizes solidarity expressed through words, presence, petitions, social media posts, or public statements.

This noun is commonly used in contexts involving social causes, human rights, academic freedom, or crisis response — for example, when citizens publicly back a wronged individual, protest unfair policies, or rally behind victims of discrimination. It carries a positive, principled connotation and often appears in formal writing, news reports, and activist discourse. While it can be used as a verb in rare colloquial constructions (e.g., '为…声援'), it functions overwhelmingly as a noun and typically follows verbs like '给予', '表达', or '提供'.