Ibans have converted to Islam from 2009–2019 according to official statistics. Many Bruneian Ibans intermarry with Malays and convert to Islam as a result. Nevertheless, most Iban in Brunei are devout Christians similar to the Iban in Malaysia. Bruneian Ibans also often intermarry with the Murut or Christian Chinese due to their shared faith. Despite the difference in faiths, Ibans of different faiths do live and help each other regardless of faith but some do split their longhouses due to different faiths or even political affiliations. The Ibans believe in helping and having fun together. Some elder Ibans are worried that among most of the younger Iban generation, their culture has faded since the conversion to Christianity and the adoption of a more modern life style. Nevertheless, most Iban embrace modern progress and development. Many Christian Dayaks have adopted European names, but some continue to maintain their ancestors' traditional names. Since the conversion of most Iban people to Christianity, some have generally abandoned their ancestors' beliefs such as 'Miring' or the celebration of 'Gawai Antu', and many celebrate only Christianized traditional festivals. Numerous local people and certain missionaries have sought to document and preserve traditional Dayak religious practices. For example, Reverend William Howell contributed numerous articles on the Iban language, lore, and culture between 1909 and 1910 to the Sarawak Gazette. The articles were later compiled in a book in 1963 entitled, The Sea Dayaks and Other Races of Sarawak. Cuisine or is a dish of rice or other food cooked in cylindrical bamboo sections () with the top end cut open to insert the food while the bottom end remains uncut to act as a container. A middle-aged bamboo tree is normally chosen to make containers because its wall still contains water; old, mature bamboo trees are dryer and are burned by fire more readily. The bamboo also imparts the famous and addictive, special bamboo taste or flavour to the cooked food or rice. Glutinous rice is often cooked in bamboo for the routine diet or during celebrations. It is believed in the old days, bamboo cylinders were used to cook food in the absence of metal pots. is preserved meat, fish or vegetable. In the absence of refrigerators, jungle meat from wild game, river fish or vegetable are preserved by cutting them into small pieces and mixing them with salt before placing them in a ceramic jar or