ICBC, a china bank listed in HK (1398.hk), is going to have a rights issue. The reason for the rights issue is to meet the new basel III requirement for banks. ICBC is already well capitalised, so they do not require much of a capital injection. Hence, the rights of the H shares (that is, HK listed one) is on the basis of 0.45 shares at HK$3.49 for every 10 existing H shares held before XR.
The announcement is made here.
Having rights for HK listed companies is a little different from those in Singapore. I had experienced it before for my HSBC counter. Basically the shares are held in a custodian account held by whichever broker you had bought the H shares from. Hence, they will do the necessary paper work for you (don't be happy, you have to pay them for such things known as ......