| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | coal | China | Historically significant as a major energy source for industrialization and electricity production | 1 |
| 2 | coal | China | Continues to be a major source of energy and heat, and is widely used in power generation and industrial processes. | 1 |
| 3 | coal | China | Continues to be a major source of energy for power generation and industrial use in modern times | 1 |
| 4 | piece of coal | China | Used for cooking in some households, especially in rural areas | 1 |