Concord Medical Services Holdings: RSI Overbought and KDJ Death Cross on 15-minute chart.

Based on the provided information, Concord Medical Services Holdings' 15-minute chart has triggered a signal indicating a potential downturn in the stock price. Specifically, the Relative Strength Index (RSI) has reached an overbought level, suggesting that the stock price has risen too quickly and is no longer supported by fundamental factors. Additionally, the KDJ Death Cross has been triggered, indicating a shift in momentum from upward to downward. This suggests that the stock price has the potential to decline further.