Money does not seem to be that important for Kay Tse On-kay. The Canto-pop idol shunned all other commercial work last month so that she could concentrate on the making of her first Putonghua album. How much money has she lost? Tse has no idea. 'I haven't calculated how much money I lost for not taking on any commercial work for the whole of July,' the 33-year-old said. 'But I don't regret it, because this is going to be my first Mandarin album. I must work hard on it.' Although Tse already has eight Cantonese albums under her belt, she had felt like a beginner singing in Putonghua, she said. Tse made one exception to her month-long hiatus last Thursday by attending an award's ceremony for the competition of making anti-corruption promotional videos, jointly organised by the Independent Commission Against Corruption and RTHK. Singers Stephanie Cheng Yung and Chau Pak-ho also joined Tse and Franklin Wong Wah-kay, the director of broadcasting at the event at the Convention and Exhibition Centre. 'I can always earn the money back some other time. I've got some commercial work planned later. I'm sure my company won't make me starve,' a smiling Tse said. Of course, if everyone could get a monthly pay cheque like the superstars, maybe there would be no need for corruption.