Formal:
* 您好，我叫布兰卡。 (Nín hǎo, wǒ jiào Bùlánkǎ.) This is the most formal and polite way to introduce yourself.
* 您好，我是布兰卡。 (Nín hǎo, wǒ shì Bùlánkǎ.) This is also formal and polite, but slightly less formal than the first option.
Informal:
* 你好，我叫布兰卡。 (Nǐ hǎo, wǒ jiào Bùlánkǎ.) This is a more casual way to introduce yourself.
* 嗨，我叫布兰卡。 (Hāi, wǒ jiào Bùlánkǎ.) This is very informal and friendly.
Important Notes:
* The Chinese name for "Blanca" is "布兰卡" (Bùlánkǎ). You can choose to pronounce it as "Bu Lan Ka" or simplify it to "Bu Lan".
* The tone of "布兰卡" (Bùlánkǎ) is: Bù (4th tone), lán (2nd tone), kǎ (3rd tone).
When to use each:
* Formal: Use formal greetings when meeting someone for the first time, in a professional setting, or when talking to someone older or in a position of authority.
* Informal: Use informal greetings with friends, family, and people you know well.
Ultimately, the best way to say "Hi, I am Blanca" in Chinese depends on the specific situation. Consider who you're talking to, the context of the conversation, and your desired level of formality.