Zǔzhī, lǐngdǎo fànzuì jítuán jìnxíng fànzuì huódòng de huòzhě zài gòngtóng fànzuì zhōng qǐ zhǔyào zuòyòng de, shì zhǔfàn.[Pinyin]
A principal criminal refers to any person who organizes and leads a criminal group in carrying out criminal activities or plays a principal role in a joint enterprise.