收养16 years old boy，just 失去亲父, how to申请?

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收养16 years old boy，just 失去亲父, how to申请?收养16 years old boy，just 失去亲父, how to申请到加拿大? 母亲失去监护权，以后不可能申请到加拿大探亲的机会。
( t* P* A5 y4 W! F; K9 F: F; l3 J
. c, y  e$ M. e0 l7 [" f+ r* {I have one girl and one boy myself.
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1 L! B4 R* e! @7 ?/ N6 aAny one might know how to do this or help? How to do the paper work in China?

Thanks first.