Quora Adopt

1. Sign up

1.1. With Google

1.1.1. Verify

1.1.2. If success

1.2. With Facebook

1.2.1. Verify

1.2.2. If success

1.3. With Email

1.3.1. Input infomation

1.3.1.1. Launch App

1.3.1.1.1. Select topic interested

1.3.1.1.2. If success

1.3.2. Validation

2. Sigin

2.1. Input infomation

2.1.1. If success