① user login, registration → ② Add to Cart → ③ selection goods→ ④enter into the clearing house  → ⑤ orders → ⑥ users pay the money → ⑦ service providers receive the money→ ⑧ shipments → ⑨ users received the goods

Note:
    After pay the money and  receive the goods, users should merchandise orders in time for the state to amend goods orders. You log "Member Center" and change it in "my orders,