1, environment The green area of Baoying Jinyuan in September accounts for 40% of the whole area. Every day, the cleaner cleans regularly, and the air is fresh. The green area in Tang Yue accounts for 30% of the whole area. The air is not fresh because of the irregular cleaning by the cleaning staff.

2. materials. Baoying Jinyuan used high-grade reinforced concrete in September, which is very strong, while Tang Yue used ordinary reinforced concrete. Baoying Jinyuan was good in September.