Examples
wǒ我bù不néng能xiāng xìn相信nǐ你shì是shuō zhēn de说真的。
我不能相信你是说真的。
I can't believe you're serious.
但是说真的，第21集让我笑得眼泪都要出来了。
Seriously though, episode 21 made me almost cry while laughing.
今天虽然是愚人节，但你的恶作剧太过分了。说真的，我挺生气的！
Today may be April Fool's Day, but your prank went overboard. Seriously, I'm pretty angry!