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。
$ C7 v, u/ Y: ^3 x
# m6 I2 e6 w) N# S; xI have one girl and one boy myself.

Any one might know how to do this or help? How to do the paper work in China?

) \  f* h* j$ x+ u0 k/ T- I6 e: k) nThanks first.