How could Korea be reunified effectively?

And we do not want to see someday North Korea could be like a tibet. . . 

From that sentence to see，you really dont know true history or you have a simply mind to understand the relationship of China and Tibet.The resource of Half Island of Korea reunified depends on American armies.After World War 2,CCCP and US devide  Half Island into 2 countries，they  brainwashed subordinated country  that make DPRK and ROK opposite.Only do this，can they get themselves benefit .When 1991，CCCP had disappeared，so they have no time to cope with DPRK，they withdraw their army，so you can think like this，DPRK is a independent country，they can do what they want except for unclear.Yet ROK have acted as US subordinated，they are doing or will do what US wanted.At this background，you have more reason to believe that DPRK dont prefer to  subordinate again.

You said that China already subordinated N.Korea's economy almost，then I wanna ask you，as the DPRK opposited country US leading boycott its economy who can help 조선？In fact，DPRK have one friend only，the others country dont dare being angry with US to help DPRK，China dare do.You can image this，one day the US out of controlling ROK，ROK has itself  independent mind，at that time，both North of Korea and South of Korea all wish they can be a reunified ，independent country like situation before World War 2——정말 대한민국（it  hardly express in English ） .North transfer mineral to south to keep new country developing and south transfer food to north to keep population，there will be 2 mainly parties govern or administer  new ‘Dae Han Min Gook’or new "Jo Seon",if the US dont boycott,you develope all by yourself，if the US boycott，you can seeking for neighborhood.

    Isnt it？

 Yes. DPRK has no friends to rely on except China.

 China is the most friendly country toward DPRK. And this could lead DPRK to rely on their economy to China because DPRK slowly lose their independency of economic development . they someday can't develop themselves but they have to rely on friend lik China .

 As long as I believed, I thought tibet itself did not want to be part of China.

I could be influenced by the media but Ive seen them protesting fiercely and their leader's remarks shows me that they do not want. I think he represents all Tibet.

I also wanna ask you, why do you think that Tibet is part of China?

You must say Dalai Lama.Firstly Dalai Lama is a official name of religion.Secondly,you need to know,Dalai Lama is not the highest leader in Tibet.According to the Religion Law of Tibet,there are two leaders,one is called Dalai Lama,the other is called Huofo(it  means Alived Buddha).It is truely that Tibet is full of Religion,almost what people in Tibet do is 2 leaders' orders.In past,1951 year before,Tibet society is full of blood.They society is in low level.Which is much similar to old ROP.The leaders make people to become slaves,which is exploited ,in history,they were called "Farmer Slavers".This system is suit for feudal society.

The communist society never allow this system to work.All of Chinese leaders aim to create a new society without exploitation and high or low classes,so they require that Tibet leaders must cancel that system.Though they are not willing to do,they had to execute.A decade later,one of Tibeten leader who is Dalai Lama,in order to Resistance to democratic rights changing,so he waged war,because new system cant make him get any benefit.

Obvious,he failured.He had to escape from Tibet to India.In India,he act as role of Great Buddha,lied thousands of people to against China.Many counties which are afraid of China or dont wanna see having enough chance to became to be super country's China,so they help Dalai Lama against Chinese Government.So if Tibet is part of China or not have no connecting with that thing.That is the excuse of Dalai Lama only.If he dont get this on the excuse of  splitting,who'll help him?From 1270 starting，Tibet is a province of China.In 700 years，China had changed 3 Dynasties including more than 30 emperors，Tibet as a province role at time，it have been saw the greatest ，richest and largest China.It  never depends on a bad man's mind to force many other people obey.

It  never depends on Dalai Lama's mind which is splitting China to say China should not have Tibet，isnt it？

And also,this Dalai Lama is 14th Dalai Lama,whose name is Danzeng Jiacuo,is borned in Province of Qinghai nor Tibet.He have no rights to decide the fate for Tibeten.