Buyback - Rato, I found this statement of yours are utterly out of truth.
" it seems that these chinese companies always talk but never deliver"
There are plenty of Chinese companies paying dividends regularly. For example, PTR, SNP, and other US listed Chinese companies paying US investors each quarter.
Alibaba, a Chinese eCommerce company, offered to pay Yahoo $11B dollars for the 39% stakes Yahoo acquired 5 years at a cost of $1B. Yahoo refused to sell.
Just think about it: If the deal proceeded as Alibaba wanted, Chinese growth companies paid back all the PIPEs money they get from US investors.