beijing hu jia well-known chinese dissident live beijing say hop go southeastern city xiamen government-sponsored holiday state security officials say tell go isolate place time tell reuters phone yunnan province far southwestern china popular destination renowned scenery culture ethnic minority group right group say hu one dozens activists dissidents detain place tight monitor vacation authorities week-long congress rule communist party begin wednesday beijing president xi jinping expect tighten grip power gather hold every five years enforce holiday hu two government minders jointly decide destinations hu suggest ancient town dali yunnan first stop public security agents accompany choose second third stop southwest region guiyang capital mountainous province guizhou coastal city beihai guangxi province hu estimate whole trip three cost close 10,000 yuan 1,510 pay authorities say minders try save money choose basic hotels travel three cities bus fly back beijing oct 28 congress end go see sight state security go everywhere hu say reuters unable independently verify account hu dissidents interview story china public security ministry respond fax request comment detention activists use vacation china rarely explain treatment dissidents say charge criminals harm social stability people china treat equally law unusual chinese authorities heighten monitor detention dissidents important political events especially people high profile know speak party state addition enforce vacation activists also detain place supervision home warn post critical message online weeks ahead congress accord hong kong-based group chinese human right defenders group also say document 14 case detention activists recent weeks one case wu kemu truck driver xuancheng city central province anhui call police talk october 11 release since wife fang liangxiang tell reuters phone sunday say release tell wait home say add expect detention relate critical things wu say government popular instant message platform wechat one answer phone saturday xuancheng city detention center fang say wu hold unclear total number detentions arrest vacation year great time previous major events many case directly relate congress activists say authorities prefer enforce vacation rather detentions make dissidents inactive inaccessible foreign journalists sensitive periods lock people attract attention hu pro-democracy activist campaigner hiv/aids sentence three-and-a-half years jail subversion 2008 say regular state surveillance since release first thing go run mountains dali know state security agents could run say add agents run type felt like briefly free prison say hu say state security agents show list people would allow stay beijing 19th party congress include liu xia widow nobel peace prize winner liu xiaobo liu xia effective house arrest beijing since husband nobel prize 2010. death july even sporadic communications friends nearly entirely sever two tell reuters public security ministry respond request comment liu xia situation activists make travel plan avoid authorities wu lihong activist wuxi city jiangsu province decade protest pollution lake tai eastern china tell reuters chinese state security call last week say come take force vacation wu though already go visit friend zhejiang province east coast far away beijing avoid 16th 17th 18th congresses vacation imprison hold home forbid speak wu say time choose go holiday without say say state security officials ask return wuxi could take vacation decline say would stay friend till congress end avoid call reuters could independently confirm wu comment chinese state security public phone number fax number website xi oversee sweep crackdown right lawyers activists since come power 2012 jail dozens right group say coordinate attempt quash dissent china new internet measure include rule hold users accountable critical post even private group chat renew crackdown technologies circumvent restrictions kit chan director hong kong-based china human right lawyers concern group say recent detentions activists represent new direction crackdown show authorities target small group draw attention specific right issue much traditional focus pro-democracy activists zhen jianghua example founder human right campaign china grassroots organization base southern province guangzhou detain sept zhuhai source close zhen decline name tell reuters ministry public security respond fax request comment target grassroots organizations person answer phone zhuhai public security bureau say aware zhen case chinese dissidents party congress mean pay 'vacation