The Nationalist Chinese were unleashed on Plains today.

About 400 chanting, banner-waving Taiwanese marched to the center of President Jimmy Carter's hometown in protest of American diplomatic recognition of the Peoples Republic of China while the president rested at his home four blocks away.

Their well-organized demonstration was loosely coordinated with another Georgia Farmers Organization, who were demanding higher farm prices.

Rounding out the protesters in a day of demonstrations in Plains were eight Lower Muskogee Creek Indians from the Pana Reservation about 60 miles away near Cairo, Ga. Despite their colorful Indian dress, their grievances against the Georgia Indian Commission were too obscure to compete with those of the Taiwanese and farmers and they were relegated to the role of bystanders.

The president, recovering from a bout with hemorrihoids and preoccupied with strategic arms limitations treaty (SALT) talks in Geneva and an effort to revive Middle East talks in Brussels, made no appearance while the protesters clogged the Plains twon center.

During the afternoon, Carter, First Lady Rosalynn Carter and the president's mother, Lillian, dropped in on a fish fry given for the press at a farm near Plains.

Early today, Carter was examined by Dr. William Lukash, the White House physician. Lukash said the discomfort the president has been experiencing from his hemorrhoids has been subsiding. The president was scheduled to have a private dinner with friends at his home tonight and has no formal schedule for the balance of his holiday vist.

The Taiwanese marshalled their forces at the Plains Welcom Center about one mile from town and marched to a pocket park sandwiched between the railroad tracks and Plains' block-long row of stores.

Conveniently, the park is dedicated to the sister city relationship between Plains and Kaohsiung Garden on Taiwan. A plaque mounted in stone and two dragon-like Chinese figures mark the relationsjip between the towns.

The only purely American symbol in the town center's park is an aluminum bald eagle perched near a flag-pole. The eagle was a gift of China Airlines, Taiwan's flag carrier. Today, apparently the victim of vandalism, the eagle had been knocked from its perch and its beak pressed into the pine bark mulch around its base. By late afternoon the bird had been restored to an upright position.

George An, president of the Worldwide Trading Corp., stood behind the sister city plaque on a platform while he delivered a fiery address to the crowe, first in Chinese and then in English.

His piercing oration in Chinese echoed incongruosly about the streets of the south Georgia farm town. Hile An spoke, the president's brother, Billy, sat on a bench in front of his service station across the tracks sipping a Billy beer, and the farmers listened quizzically. "Do you savvy any of that, Tom?" one farmer asked a friend as An brought cheers from his Taiwanese listeners.

An chastised Carter and said his recognition of the communist government in Peking and severing of official ties with Taiwan do not reflect the wishes of the American people. "Grass-roots America is apparently crying out in a single voice, "No," he said.

Thomas Kersey, president of the farmers association, followed An with a brief speech. "don't feel alone being sold out," he said. "We American farmers also have been sold out." Kersey said the American people have been told trade relations with the communist Chinese would be a great "bane" - he presumably meant boon - but in fact would not help trade balances because of low prices for farm exports.

Carter is scheduled to remain here until Tuseday.