"Cease to be", is referring to the loss of consciousness and being that would come with death, whereas "die" is only body deep. So "cease to be" means the same as "die", but covers the mental and subconscious levels of being, as well as the physical.
It could also be seen as a shortening of the phrase "cease to be <em>alive</em>", if you wanted it to
Answer:the little boy came inside my castle instantly I became angry but i didn’t want to hurt the little boy . So I asked him little boy will he return my things nicely & the Little boy smile n said he was sorry n nicely returned my things