Mandopop star Zhang, who is nicknamed the "Dolphin Princess" for her high vocal register, has been filming in Las Vegas, New York and San Francisco for the campaign, set to be called "Feel the USA", the organization told Reuters. Brand USA, which markets the United States as a travel destination, hopes the move will lead some of her 42 million Weibo followers to visit after a year marked by falling Chinese tourist numbers that has alarmed hoteliers and retailers. "(It is) the biggest consumer initiative we've had with Sina Weibo since we began working together five years ago," marketing chief Tom Garzilli said in a statement.