What was the main reason for the decline in China's A-share market on August 19, 2026?

Decline primarily driven by macroeconomic conditions such as GDP growth, inflation, or monetary policy.

Decline primarily driven by new government policies, regulations, or official statements affecting the market.

Decline primarily driven by international market movements, geopolitical events, or foreign investor behavior.

Decline primarily driven by negative news about specific companies or sectors that had a broad market impact.

Decline primarily driven by market technicals, investor sentiment, or panic selling without a clear fundamental trigger.

Any other reason not covered by the above categories.