Although India gives the outside world the impression of being an "English-speaking country," in reality, the prevalence of English is only around 10.5%. This is especially true for the Lower Caste and untouchables, who often don't have the opportunity to learn English due to economic and social restrictions.
What Li Xiang didn't know was that Luo Feifei had always wanted to come to India with him and pose as Divine Envoys. Since a Divine Envoy walks among mortals, they would naturally have to speak Hindi. So, she had studied it for a while. Although she wasn't very good, she could handle a simple conversation without any issue.
Luo Feifei may not have had much formal schooling, but that didn't mean she was a slow learner. Her acting career had interfered with her education—a problem stemming from her mother's career planning, not from any lack of ability on her part.
