Joanne Tsai on Instagram: "When to use 「二èr」 and 「兩liǎng」？ What’s different between them? Both of these two characters mean “two” in mandarin, but used in different situations. 「二」is used in： 1. Math or sequence 2. Formal numbers (like room numbers, phone numbers) 3. Date 4. Year 「兩」is used in: 1. Before a measure word 2. Big numbers (like 200, 2,000…etc) Next time, when you’re confused about which character to you when saying “two”, think of these rules and you’ll surely find the right answer👌