Core Points - The article discusses the ongoing maintenance and upgrade of the lighting system at Tiananmen Square, focusing on the cleaning and repair of the "Hualan" lights, which is expected to be completed by early August 2023 [1][2]. Group 1: Maintenance and Repair - The maintenance work includes the cleaning and repair of 253 "Hualan" lights, 2,849 light balls, and over 6,000 light sources, with a focus on upgrading the single light monitoring system [1][2]. - The newly implemented single light monitoring system, launched in 2023, allows for real-time monitoring of each light source's operational status, enhancing the precision of maintenance efforts [2]. Group 2: Aesthetic Enhancements - The maintenance also involves deep cleaning and restoration of 110 granite lamp bases, which will be repainted and repaired to preserve their artistic designs, symbolizing the nation's prosperity [4]. - The lamp bases, originally modified in 2012, feature unique floral patterns, contributing to the cultural significance of the lighting system at Tiananmen Square [4]. Group 3: Green Transformation - The lighting center is testing the application of CLED light sources, which are energy-efficient and have high luminous efficacy, as part of a green transformation initiative [6]. - A one-year trial will assess the stability and energy-saving effects of CLED light sources under various seasonal and climatic conditions [6].

Core Viewpoint - The article discusses the ongoing maintenance and upgrade of the lighting system at Tiananmen Square, highlighting the comprehensive cleaning, monitoring system upgrades, and the introduction of energy-efficient CLED light sources. Group 1: Maintenance and Inspection - The maintenance work for the lighting system at Tiananmen Square and Chang'an Avenue commenced in late June and is expected to be completed by early August, involving the cleaning and inspection of 253 lamp posts, 2,849 light bulbs, and over 6,000 light sources [1] - The inspection will now include the newly implemented single-lamp monitoring system, which was launched in 2023 to monitor the operational status of each light source in real-time [2] Group 2: System Upgrades - The monitoring system has been upgraded to reduce errors caused by current fluctuations, enhancing monitoring accuracy and efficiency [2] - The lighting management center will also conduct comprehensive testing of four high pole lights in Tiananmen Square to ensure optimal lighting conditions [2] Group 3: Aesthetic Enhancements - The maintenance includes deep care for 110 granite lamp bases, which will be cleaned, repainted with protective agents, and repaired for any damage, enhancing the visual appeal of the area [3] - Each lamp base features unique floral patterns, symbolizing the flourishing of the nation, and this maintenance preserves both historical craftsmanship and cultural landmarks [3] Group 4: Technological Innovations - The maintenance will pilot the use of CLED light sources on the lamps, aiming to replace traditional electromagnetic induction lamps, which offers advantages such as lower energy consumption and higher light efficiency [4] - A one-year trial will be conducted to test the stability, light decay, and energy-saving effects of CLED light sources under various seasonal and climatic conditions [4]