Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years! Guangdong lettuce bun has greatly increased appetite and has a history of more than 300 years!