Im a filipino engr. in saudi arabia wants to visit my daughter in shanghai china!

Dan, you can visit Chinese embassy in Saudi Arabia to apply for a L type and then visit your daughter in China. She can send you an invitation letter, a copy of her passport information page and her valid visa page. Then you need to prepare your passport, filled application form, a recent passport photo and the above mentioned docments to apply for a L type. I assume that you work in Saudi Arabia, right? If so, you need to provide your resident permit for employment too. If you don't have this, I am not sure that the embassy will accept your application.