推动煤炭工业高质量发展，必须依靠科技创新和智能化升级。
To promote the high-quality development of the coal industry, we must rely on technological innovation and intelligent upgrading.
The key ingredients of happiness could not be material or aesthetic, but must always stubbornly psychological.
Light is the most important material in architecture.
循环经济不是一种选择——对于希望在未来十年蓬勃发展的行业来说，这是唯一的前进方向。