# System Overview
Submission Method
- Use HTTP protocol with POST+JSON format for submission.
Character Encoding
- Use UTF-8 character encoding uniformly.
Data Format
- All communications use JSON format.
Signature Algorithm
- MD5 signature result is a lowercase MD5 string.
Access Method
- Web page access and API access.
Language Setting
- Add language parameter in the header: Accept-Language: en/zh-hans/zh-hant/id.
Workflow →