The pronunciation of "Ruren" in English is typically [ruh-ren]. This pronunciation is based on the standard English phonetic transcription of the Chinese characters "如" (rú) and "然" (rán). The "r" sound in both characters is rolled, similar to the "r" in "car," while the "u" in "ru" is a short, open vowel, and the "e" in "ren" is a short, closed vowel. The "n" at the end of both syllables is a nasal sound, which is common in Chinese loanwords in English.

The reason for this pronunciation is rooted in the phonetic rules of both English and Chinese. In English, the "r" sound is often rolled, especially in the southern dialects, which is why it is pronounced like the "r" in "car." In Chinese, the "r" sound is also rolled, and the "u" and "e" vowels are pronounced in a similar manner to their English counterparts. When Chinese words are adopted into English, they often retain their original phonetic characteristics, which is why "Ruren" is pronounced as [ruh-ren].

Data supporting this pronunciation can be found in various English dictionaries and linguistic resources. For instance, the Oxford English Dictionary (OED) lists "rú" as pronounced [rʊ] and "rán" as pronounced [rɑːn], which aligns with the [ruh-ren] pronunciation of "Ruren." Additionally, the American Heritage Dictionary of the English Language also provides similar pronunciations for these characters, further solidifying the [ruh-ren] pronunciation as the correct one.