let's consider those events with dr. shah zhang. he was actively involved in student protests from 985 to 1909. when he was the student that beijing university was also among one of the last groups to leave gentlemen square after the troops and tanks. 5 at demonstrate is trying to block the messages advance. he joins us now from exxon in london. welcome to d, w. take us back then. to 30 years, would you, when, when students in, in china were protesting, what were you processing about? what did you want? basically li, bunk democracy and freedom of speech and the freedom of assembly of freedom association. that is a very important that because i was on light life expiring and my parents, i want parents generation, the sampler, so much 1000000 people were murdered, killed doing. the chinese comes rule that's very clear use one mission. so i was in the reason we want to change the china during that time. if you want to turn the system, they must treat them on the ration and pre pre and also pre i sign the special organize, right? then y