The Nikkei has the piece on Chinese officials seeking to calm investor fervour:

• on fears that investor anger in the wake of any financial collapse would stoke discontent with the government
• Industrial and Commercial Bank of China, a major state-owned lender, notified customers at the end of July that it would cease setting up new accounts for financial products linked to platinum and palladium prices
• Other banks have taken similar action
• “This is what the authorities wanted,” said a sales manager at a large bank