"In Shekou, Shenzhen, users can use the phone within 7 days from the date of application. As of April 1993, the capacity of Shekou telephone exchanges reached 25,000 and telephone users reached 19,000. According to the permanent population in this area, the mainline The penetration rate has reached 76%, far surpassing Hong Kong, which has the highest telephone penetration rate of the "Four Little Dragons" in Asia. The telephone line penetration rate in Hong Kong is 50%. ". This article will be published in a tabloid, please choose the most appropriate title for it, summarizing the meaning of the essay. ['Shekou telephone mainline penetration rate exceeds the "four little dragons".', 'Shekou telephone mainline penetration rate reached 76%.', "Shekou's mainline penetration rate ranks first in the country.", 'Hong Kong\'s telephone mainline penetration rate ranks first among the "four little dragons".']