@Dada ***
the exact situation is like this… when I applied for the extension on 25 Apr (visa expiring on 5 May), they stamped the 30 days consideration to report in person on 25 May… then when I reported on 25 May, they stamped the new exit date to be 4 July, so it seems a full 60 days extension from the original visa expiry date rather than the application date now