The Sam Ba Sing Tzik is the remaining front wall of the Sacred Ruins of St Paul's Church. The holy church was designed by a Father of Italian nationality and was constructed with the help of the Japanese technology of superlative craftsmanship. The foundation was laid in 1602 and it was completed in 1637. However, because of an indissoluble cause, the church caught fire three times one after another and it was rebuilt after each fire three times one after another and it was rebuilt after each fire, which is a living historical testimony. The last fire that set the church into flames occurred in 1853 which was the most serious one. After the conflagration, only the front wall, the most valuable part remained.
At that time, the architecture of St Paul's Church mixed together the style of the European Renaissance period and that of eastern architecture with a good continuation of the Chinese and western elements and fine workmanship of carving. From the relief sculpture on the Sam Ba Sing Tzik, one can see that the Dai Sam Ba is divided into four floors. On top of it, there stands aloft the Cross. Underneath it is again subdivided into storeys. In the niche of each floor, a bronze statue is stored, which was cast by the Macau Cannon manufactory. Under the Cross , there is a bronze statue in the shape of a pigeon, representing the holy god, and around it , there are stone sculptures of the sun, the moon and the stars symbolizing the pregnancy of St Virgin Maria in a flash of light and below is a picture of Holy SonĦXJesus Christ. Beside it are the tools used to crucify Jesus.
Right in the middle of the third floor, is carved the statue of St Virgin Maria surrounded with peony and chrysanthemum on both sides, the former represents China and the latter, Japan. On the left are carved "Eternal Crowd", a "Sailing Boat in Portuguese Style" and a "Monster with Ferocious Features". On the right are carved statues of the Life of Tree and St Maria conquering the monster and piercing through the death's head, all of which symbolizes the conquest of death. And still below is the niche floor, on which there is a statue of four figures with Jesus meeting with the sage.
At the bottom of the Sam Ba Sing Tzik are three doors. On the main door is inscribed the Latin words MATER DEI, representing Goddes St Maria. On both sides of it is inscribed the mark "HIS" of Jesus Christ. On the whole, the front wall has two sets of meanings. One, at the two floors of the architecture below in the form of a square, reflects the work of the disciples of the Jesuits and the missionaries belonging to the sect of This Life Christian Church who travel around the world for missionary work. The other one in the form of a triangle mainly represents the saints model of three saints (Holy Father, Jesus Christ and Holy God) and Virgin St Maria praying for mankind in the presence of God.
