Lingaku- see 刀子嘴，豆腐心【dāo zi zuǐ , dòu fu xīn】
Generated: This phrase describes someone who may speak harshly or criticize others but has a kind and soft-hearted nature. It highlights the contrast between their tough exterior and gentle interior.
tā他zǒng shì总是zuǐ yìng xīn ruǎn嘴硬心软，cháng cháng常常duì对péng you朋友fā huǒ发火，dàn但qí shí其实fēi cháng非常guān xīn关心tā men他们。
He often speaks harshly but has a soft heart, and he really cares about his friends.