The building the Tofugu office is in was built on solid ground.
When I chewed the tough beef, for some reason I realized just how insignificant I am and tears came to my eyes.
I'm telling this to you because you are a tight-lipped man, but I saw Aya touching Kinnikuma’s washboard stomach and rock-hard pecs.
This is a single kanji with an い on the end, meaning you know it's probably an adjective. What's the adjective form of hard? It's hard.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: You need to cut something that's extremely hard so you pull out your diamond cutters (かた). Go ahead and imagine yourself cutting this ridiculously hard thing. Good thing you have diamond cutters, though.