A furniture system comprising: a first rectangular pillar; and a first table structure comprising a first table, a second table, a third table, a fourth table (100a-d) and a first pillar region where the first rectangular pillar is disposed, the first table, the second table, the third table, the fourth table (100a-d) comprising a rectangular first top plate, a rectangular second top plate, a rectangular third top plate and a rectangular fourth top plate (110a-d), respectively, wherein the structures of the second table, the third table and of the fourth table are substantially the same as that of the first table; wherein each of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d) has a first long side (110a-1), a first short side (110a-2), a second long side opposite to the first long side and a second short side opposite to the first short side, wherein the first long sides (110a-1) of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d) are in contact with the first short sides (110b-2) of the second top plate, the third top plate, the fourth top plate and the first top plate, respectively, such that the first table structure has a square outline defined by the second long sides and the second short sides, wherein the first pillar region is at a center of the first table structure and defined by the first long sides (110a-1) of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d), and wherein the furniture system further comprises: a first partition disposed at a contacting surface of the first top plate and the second top plate; a second partition disposed at a contacting surface of the second top plate and the third top plate; a third partition disposed at a contacting surface of the third top plate and the fourth top plate; and a fourth partition disposed at a contacting surface of the fourth top plate and the first top plate. a first rectangular pillar; and a first table structure comprising a first table, a second table, a third table, a fourth table (100a-d) and a first pillar region where the first rectangular pillar is disposed, the first table, the second table, the third table, the fourth table (100a-d) comprising a rectangular first top plate, a rectangular second top plate, a rectangular third top plate and a rectangular fourth top plate (110a-d), respectively, wherein the structures of the second table, the third table and of the fourth table are substantially the same as that of the first table; wherein each of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d) has a first long side (110a-1), a first short side (110a-2), a second long side opposite to the first long side and a second short side opposite to the first short side, wherein the first long sides (110a-1) of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d) are in contact with the first short sides (110b-2) of the second top plate, the third top plate, the fourth top plate and the first top plate, respectively, such that the first table structure has a square outline defined by the second long sides and the second short sides, wherein the first pillar region is at a center of the first table structure and defined by the first long sides (110a-1) of the first top plate, the second top plate, the third top plate and the fourth top plate (110a-d), and wherein the furniture system further comprises: a first partition disposed at a contacting surface of the first top plate and the second top plate; a second partition disposed at a contacting surface of the second top plate and the third top plate; a third partition disposed at a contacting surface of the third top plate and the fourth top plate; and a fourth partition disposed at a contacting surface of the fourth top plate and the first top plate. a first partition disposed at a contacting surface of the first top plate and the second top plate; a second partition disposed at a contacting surface of the second top plate and the third top plate; a third partition disposed at a contacting surface of the third top plate and the fourth top plate; and a fourth partition disposed at a contacting surface of the fourth top plate and the first top plate.