| Technical Contents | Domestic Average Level | Domestic Advanced Level | International Advanced Level | Technology Gap between Domestic Level and International Level |
| Technical data of vertical elevation | low | medium | high | Lack of statistical material except individual cases |
| Coordination between site design and large scale design | low | low | high | Coordination problem among overall planning, controlling planning, and engineering design |
| Design method of sponge garden | low | low | high | The basic rules need to be further studied |
| Fine construction level | low | low | high | Fine construction is hard To be implemented |
| Connection between above- and under-ground hydrology, balance between water quality and quantity | low | low | high | Gap among different segments; lack of systematic thinking |