▁lost ! ▁We ▁are ▁willing ▁to ▁fight ▁to ▁the ▁last ▁person ." ▁ ▁According ▁to ▁Ch ai ▁L ing ' s ▁book ▁A ▁Heart ▁for ▁Fre edom : ▁The ▁Rem ark able ▁J our ney ▁of ▁a ▁Young ▁D iss ident , ▁her ▁D aring ▁Es cape , ▁and ▁her ▁Qu est ▁to ▁Free ▁China ' s ▁D augh ters , ▁and ▁Wu ▁Ren h ua ' s ▁book ▁Major ▁Events , ▁T ian an men ▁ 1 9 8 9 ▁at ▁least ▁one ▁hundred ▁thousand ▁people ▁gathered ▁in ▁the ▁Square ▁when ▁Ch ai ▁L ing ▁took ▁the ▁o ath . ▁And ▁some ▁people ▁joined ▁them ▁after ▁Wang ▁Dan ▁announced ▁the ▁formation ▁of ▁the ▁Def end ▁T ian an men ▁Square ▁Head quarters . ▁ ▁A ctions ▁Def end ▁T ian an men ▁Square ▁Head quarters ▁established ▁a ▁variety ▁of ▁measures ▁to ▁protect ▁students ▁protest ing ▁in ▁T ian an men ▁Square . ▁Their ▁first ▁was ▁the ▁installation ▁of ▁a ▁broadcast ing ▁system ▁for ▁establish ing ▁authority ▁and ▁issu ing ▁instructions ▁to ▁protest ors . ▁The ▁system ▁was ▁used ▁for ▁a ▁final ▁time ▁on ▁June ▁ 3 ▁to ▁report ▁the ▁first ▁acts ▁of ▁violence ▁occurr ing ▁on ▁the ▁square ’ s ▁surrounding ▁streets , ▁and ▁to ▁prompt ▁the ▁Hung er ▁St rik ers ▁to ▁remain ▁pass ive . ▁The ▁system ’ s ▁use ▁quickly ▁expanded ▁beyond ▁its ▁original ▁purpose . ▁In ▁his ▁mem oir , ▁Li ▁Lu ▁notes ▁that ▁early ▁on ▁June ▁ 3 ▁the ▁system ▁was ▁used ▁to ▁pac ify ▁ag itated