Component 冈 gāng low, flat mountain ridge Stroke order ▶ 冈 used in 4 characters HSK 3 刚 gāng hard; firm (opposite of "soft") HSK 4 钢 gāng steel (iron-carbon alloy with less than 2% carbon content) HSK 6 岗 gǎng raised mound or slope of earth HSK 7 纲 gāng the main rope of a fishing net; the key or essential part of something (often referring to documents or speeches)