Chinese Financial Documents in Extension Applications Require Full English Translation and Translator Certification
Citing USCIS's I-539 instructions, the article explains that documents submitted to USCIS containing foreign-language information must include a complete English translation, with the translator certifying that the translation is complete and accurate and that he or she is competent to translate. Using Chinese bank financial statements as an example, it suggests asking a bilingual friend to provide translator certification and includes a sample certification.
If you do not have a bank account in the United States and need to use a Chinese bank for proof of funds, all non-English documents must be translated into English.
The official USCIS I-539 filing guide states the following:
Translations. Any document you submit to USCIS that contains information in a foreign language must be accompanied by a complete English translation. The translator must certify that the English translation is complete and accurate and that he or she is competent to translate from the foreign language into English.
It is suggested to find a bilingual Chinese-English friend to provide the certification, referring to the "notarization" I previously did for a marriage certificate:
CERTIFICATION BY TRANSLATOR This is to certify that I am competent to translate from Chinese into English and that the above translation is accurate. Signature: Date: Printed Name: Cell: Address: