BEIJING, Nov 22 (Reuters) - Some Chinese banks have been told by financial regulators to issue more loans to property firms for project development, two banking sources with direct knowledge of the situation told Reuters on Monday, in efforts to marginally ease liquidity strains across the industry. Chinese authorities have yet to publicly give any signal that they will relax the "three red lines" - financial requirements introduced by the central bank last year that developers must meet to get new bank loans. But lenders have recently adjusted their lending practices to reflect the latest central bank guidance of "meeting the normal financing needs" of the sector. read more The marginal relaxation of loan policies to developers will still stick to the major principle that "homes are for living in, not for speculation," said the sources, one from a city commercial bank and the other from a big bank, who received the guidance from regulators. Financial regulators have told the banks to specifically accelerate approval of loans to develop projects, and to ensure that outstanding loans to project development show positive growth in their loan books in November compared with October, the two sources said. Both sources declined to be named due to the sensitivity of the matter. The People"s Bank of China (PBOC) and the China Banking and Insurance Regulatory Commission (CBIRC) did not immediately respond to requests for comment. As of end-September, banks" outstanding loans to project development stood at 12.16 trillion yuan ($1.91 trillion), up by 0.02% from a year earlier, central bank data showed. Quarterly growth of this loan type slowed further from the second quarter by 2.8 percentage points, the data showed. The real estate sub-index of the Chinese mainland"s blue chip index (.CSI000952) jumped nearly 5% on Friday following market rumours about potential relaxation of property loans. The sub-index ended down 4% on Monday. China will stand firm on policies to curb excess borrowing by property developers even as it makes financial tweaks to help home buyers and meet reasonable demand, bankers told Reuters previously. read more Some banks have accelerated disbursement of approved home loans in some cities, the bankers said. read more Last month, central bank official Zou Lan said there had been "misunderstanding" among lenders about the PBOC"s debt-control policies, causing financial strains for some developers. read more "Banks should have supported new projects reasonably after (developers) have repaid existing loans," Zou said. ($1 = 6.3819 Chinese yuan) Reporting by Xiangming Hou, Kevin Huang and Ryan Woo; Writing by Cheng Leng; Additional reporting by Jason Xue; Editing by Jacqueline Wong