What cultural faux pas should I try to avoid making in Ipoh?

"It is important to be mindful of cultural norms when visiting Ipoh. It is important to dress modestly and to avoid public displays of affection. It is also important to be respectful of religious beliefs and practices, and to avoid making jokes or comments about them. Additionally, it is important to be aware of local customs and to avoid offending people by speaking too loudly or using offensive language. Finally, it is important to be respectful of the local culture and to avoid making assumptions about people based on their ethnicity or religion," mentioned another expat when asked about moving to Ipoh, Malaysia.