PaPa English, also known as Shanghai Yinlang Information Technology Co., Ltd., is an online education brand for studying abroad. It is a subsidiary controlled by a well-known American listed Internet company with a team of 300 to 500 people.

Reliability is a modern buzzword. Reliability is the antonym derived from "outrageous", which means reliable, trustworthy and trustworthy. When reading, you should have a phonetic notation. Can also be understood as reliable.