in the 20th century, japanese scholar fujita toyohachi () said buddhism entered china during the qin dynasty. the word 不得 (pinyin: "bude"; rough pronunciation: boo-duh) is pronounced nearly exactly like the sanskrit word "buddha". it was used to write down buddha in the chinese language. others (like ) disagreed. moreover it is unlikely 得 would be used to transliterate. and based on the evolution of chinese tones, 不得 would sound something like putug ( says “不得” is [pɯtɯːɡ]).