A MAN denied in the High Court that he repeatedly threw his girlfriend's baby on the floor and the edge of the bed, causing her death. Tsui Kai-sui, 31, a seafood wholesaler at Tai Po market, denied he had ever been upset or annoyed by the baby's cries or had ever scolded the 111/2-month-old baby. Under cross-examination by Senior Assistant Crown Prosecutor Samuel Leung, Tsui said he had no reason to suspect his girlfriend, Hui Ting-ting, 20, was responsible for the baby's death. Tsui has denied murdering Lee Po-yan on May 18, last year, and a further charge of cruelty to Po-yan between March 28 and her death. A post mortem examination found multiple abrasions and bruises and a number of skull fractures. The cause of death was head injuries. Tsui agreed he had a lot of sympathy for the baby and stood in for her natural father. Questioned about the baby's injuries, Tsui said he did not think anyone would cause injuries to a baby deliberately. He later denied knowing of the bruises on the baby's body. The day before the baby's death, Tsui said he went to Tsim Sha Tsui with the baby for five hours. He tried to feed her some congee at 4 pm but she refused. He said the baby appeared to be sleepy but was not crying. She was put to sleep at about 11 pm that night. Tsui claimed the following morning when he went to cover the baby, he found her limp and cold. He denied the baby had had a fall. When asked why he had told staff at the Kwong Wah hospital that the baby had had a fall, Tsui said it was to protect Ms Hui who he was afraid might be charged for the baby's death. He said he suspected that Ms Hui may have dropped the baby as she handled her roughly. In answer to a question, Tsui agreed he would have heard if someone threw the baby repeatedly onto the floor. He claimed that at the police station, he was told by an officer what to record in his statement. ''He was teaching me what to say as to how the baby got its injuries,'' Tsui claimed. He denied making up this ''cock and bull story''. The hearing continues.