what the requirement for china visa for bangladeshi citizen

Do you work in China now? and want your wife from Bangladesh to be with you in China? if yes, she needs to apply for a China family visit visa L from Chinese embassy in Bangladesh. The required documents are original passport, application form, photo, six-month bank statement or an invitation letter from you (China), as well as document that your relationship can be proved (Marriage Certificate etc.)

I work in fiji islands. I am a Fijian passport holder and I have own house in Fiji islands. My wife will not stay in Hong Kong. She will use your Hong Kong airport for transit only.She will be travelling Dhaka to Hong Kong to Nadi. She is a house wife. Please give the detail.

In this case, she needs to apply for a HK transit visa through Chinese embassy in Bangladesh. The requirements are her passport, application form for HK visa, photo flight tickets and possibly valid visa or residence permit for Fiji.