xué / xí / hàn / yǔ / pīn / yīn / shí / wǒ / men / yào / zhù / yì / dú / yīn / fú / hào / de / biàn / huà学习汉语拼音时,我们要注意读音符号的变化。When studying Chinese pinyin, we need to pay attention to changes in the pronunciation symbols.