Han Wei / Caixin Global: Baidu reports Q1 revenue of $3.18B, down 7% YoY, and iQIYI revenue of $1.08B, up 9% YoY; iQIYI subscribers grew to 118.9M and membership revenue grew 35% YoY — Chinese online search giant Baidu Inc. reported a 7% year-on-year revenue decline in the first quarter to 22.5 billion yuan …