China visa for an infant

Re: visa

good morning,

i would like to find out if my partner is american/nigerian and am chinese, now i want to apply visa for my daughter travel to china to see my family, but she is holding nigerian passport right now, what is the requirements? what documents should bring to the embassy? also, she will be in china for about 3 months with me.

please if you could reply as soon as possible.

thank you

Zhang