this one is so popular on the net millions people clicked on it,it's taken by a college student of Sichuan university holding a cellphone during the event .And Chengdu is still not centre of earthquake but less than 100 km away from central devastation point.i'll translate their conversation(also swearing.. yeah i know...) below, numbers in front indicate times

18s what the hell!

20s Shi Zhi Bo(the guy he talking to) i love you!

24s no no no..

26s let's get down stairs to that square ,let's go,quick!

30s no no no don't move we are fine staying here,we are in 6th floor!we are in 6th floor it's alright!

39s ok i got to put on my shoes first (other laughing)

42s no need to hurry (repeats 3 times) calm down!x3

46s shit shit! let's get on internet (others:what?)get on net and share this clip!

52s WTF not the time to share this.. not now!

56s why the f***ing earthquake here? why?!

1m07s this is 2008 april...(this guy too nervous speak a wrong date) apr 5th .... no no it's 2008 May 12th 2:29 pm.

1m22 we are in Chengdu Sichuan university Jin shan campus.

1m27  it's earthquake going on!

1m38  our building still shaking

1m43  absolutely true! earthquake FOR REAL!(others:let's get down stairs go go)