Hi all! I have been granted an L-visa valid from 14march2011 until 13april2011 but my travel date to PRC has been pushed back so that instead of entering PRC by 14march2011, i might be able to go there by 1april2011. Does it mean that I have to leave PRC by 13april2011 (only leaving me 13 days of stay instead of 30)?

or may Philippine passport holders apply for an extension of L-visa once there? If yes, what requirements would I need to present/how much and where? Thanks all!