因为宋朝建都开封,故北宋人往往以开封和洛阳方言作为当时的标准语音。人称“乡音是处不同,惟京师,天朝得其正”。陆游说:“中原惟洛阳得天下之中,语音最正。”但是,他又认为即使是洛阳方言的读音亦并非纯正,如洛阳语“谓弦为玄,谓玄为弦,谓犬 Because the capital of Song Dynasty was opened in Kaifeng, the Northern Song Dynasty tended to use Kaifeng and Luoyang dialects as their standard pronunciation at that time. People say ”accent is different at home, but the capital, heaven was its “. Lu You said: ”Central Plains Luoyang in the world, the voice is the most positive." However, he also considered that even the pronunciation of Luoyang dialect is not pure, such as Luoyang language dog