WS, you need to provide your bottom line requirement such as …- The max DB noise you can afford- When the construction work need to complete (since we are not in production yet)- The duration of the solution (max 10 years?)WangGong, please base on what WS asked to provide your advised solution.May be two solutions combined, as long as we can achieve or surpass the bottom line requirement I hope to hear both of your conclusion before 12/6