The evidence provided strongly and consistently supports the statement. Multiple highly authoritative sources, including Bloomberg and Reuters, explicitly link the sharp decline in China Vanke's bond prices to investor concerns regarding government support. Several sources state this causal link directly. For instance, one Bloomberg article attributes Vanke's struggle to reassure investors to the absence of "clearer signs of government support." A Reuters article directly states that the bonds slumped due to "mounting concerns about the extent of government support." Other sources echo this, mentioning worries over "restructure risks" and Vanke's "state backing."The primary trigger identified by the sources for this loss of confidence was Vanke's first-ever request to delay repayment on an onshore bond. This event undermined the long-held assumption that Vanke, as a partially state-backed developer, would receive unconditional government support, leading to a sell-off in its bonds.The evidence is highly consistent across all relevant sources, from top-tier financial news agencies to smaller outlets. There are no contradictions. While one source has a significant data error (a mismatched URL and title), the text of its summary is consistent with the overwhelming consensus. Therefore, the statement is assessed as very likely to be true with a high degree of confidence.